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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia Jurnal Hortikultura Indonesia (JHI) MEDIA KONSERVASI Forum Pasca Sarjana Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Reaktor Bioma : Berkala Ilmiah Biologi SAINS DAN MATEMATIKA Jurnal Ilmu Lingkungan Jurnal Natur Indonesia Ganendra: Majalah IPTEK Nuklir Jurnal Ilmiah Aplikasi Isotop Radiasi Microbiology Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology Journal of Tropical Soils Jurnal Sosial Ekonomi Pertanian Jurnal Agro Teknologi Tropika Indonesian Journal of Agricultural Science Jurnal Hortikultura Jurnal Agro Ekonomi Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Jurnal Sumberdaya Lahan Buletin Penelitian Tanaman Rempah dan Obat JTSL (Jurnal Tanah dan Sumberdaya Lahan) Wacana, Jurnal Sosial dan Humaniora Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science Jurnal Solum Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Planta Tropika Jurnal Tataloka MAJALAH ILMIAH GLOBE SAINS TANAH - Journal of Soil Science and Agroclimatology Jurnal Penelitian Pertanian Tanaman Pangan Journal of Regional and Rural Development Planning Jurnal Penelitian Kelapa Sawit EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup JURNAL PANGAN Jurnal Agro Ekonomi Buletin Penelitian Tanaman Rempah dan Obat Jurnal Sumberdaya Lahan Jurnal Tanah dan Iklim

Atang Sutandi

Departemen Ilmu Tanah Dan Sumber Daya Lahan, Fakultas Pertanian Institut Pertanian Bogor, Jl. Meranti Kampus IPB Dramaga Bogor 16680

Author-ID : 396828

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Social Sciences Veterinary Other

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Assessing the distribution of total Fe, Cu, and Zn in tropical peat at an oil palm plantation and their relationship with several environmental factors Heru Bagus Pulunggono; Lina Lathifah Nurazizah; Moh Zulfajrin; Syaiful Anwar; Supiandi Sabiham
Journal of Degraded and Mining Lands Management Vol 9, No 2 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.092.3349

Extensive utilization of fragile tropical peatlands ecosystem encourages a better understanding of spatiotemporal micronutrients distribution. The distribution of total Fe, Cu, and Zn in peat and their relationship with environmental factors were studied under oil palm plantation, Pangkalan Pisang, Koto Gasib, Riau, Indonesia. Peat samples were taken compositely inside the block using a combination of six factors, including a) the oil palm age (<6, 6-15, >15 years old), b) the peat thickness (< 3 and >3 m), c) season (rainy and dry), d) the distances from the secondary canal (10, 25, 50, 75, 100, and 150 m), e) the distances from an oil palm tree (1, 2, 3, and 4 m), and f) the depth of sample collection (0-20, 20-40, and 40-70 cm from the peat surface). Total Fe, Cu, and Zn were determined by the wet digestion method. These micronutrients observed in this study possessed high variability; however, they were within the expected range in tropical peatland. The entire micronutrients were statistically different by oil palm age, peat thickness, and distance from canal. Meanwhile, total Cu and Zn were also significantly different at each season. The oil palm age, peat thickness, and distance from the canal were the common factors controlling total Fe, Cu, and Zn in peat significantly. Moreover, total Cu and Zn were also dictated by season, distance from the oil palm tree, and depth of sample collection. Based on visual interpretation in PCA (principal component analysis), all micronutrients were categorized into two groups, separated by 2 m distance from the oil palm tree and 20 cm depth from the soil surface. Our study also highlights the dominance of the dilution over the enrichment process in peat, which requires further research to formulate micronutrients fertilization, especially for an extended cultivation time.

CADANGAN, KEHILANGAN, DAN AKUMULASI KARBON PADA PERKEBUNAN KELAPA SAWIT DI LAHAN GAMBUT TROPIKA Maswar Maswar; Oteng Haridjaja; Supiandi Sabiham; Meine van Noordwijk
Jurnal Solum Vol 8, No 1 (2011): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Peat land conversion to oil palm plantation affects carbon stocks and can change a net sink of atmospheric carbon (C) into a net source. The influence of location, type of peat, drainage practices and fertilization is insufficiently known. A study was conducted in West Aceh from May 2008 until October 2009 in oil palm plantations of various age. Carbon stocks and C loss were calculated from data of bulk density (BD), ash content, carbon content, and peat depth. A new method for C loss estimates using ash as internal tracer was developed and tested. Peat land characteristics after drainage and conversion to oil palm plantation were investigated by field observation and laboratory analysis of peat soil samples in the laboratory. Results showed that: 1) Distance from the drain influences the rates of: a) water table depth, b) subsidence, with rates of 1,1 to 9,2 cm/year and 22.67 – 57.23% influence of C loss, and c) soil carbon loss. 2) Ash content and bulk density of the peat are related, indicating the partial loss of soil C during compaction. 3) An “internal tracer” estimate of peat C loss yields estimates of CO2 flux up to 48 t CO2-eq ha-1 y-1 for young oil palm, highly correlated with measured rates of subsidence of the surface and water table depth. 4) Patterns of weight loss of surface litter, measured in litter bags, respond to inherent quality (C/N). Some data for oil palm on shallow peat suggest that a net sink for C can be maintained under such conditions.Key words: Carbon stock, carbon loss, carbon accumulation, oil palm, tropical peat

Filter Cake Utilization as Filler of 15-15-15+5S Compound Fertilizer: Particle Size Distribution and Granule Crushing Strength Properties Kasmadi Kasmadi; Budi Nugroho; Atang Sutandi; Syaiful Anwar
Reaktor Volume 19 No. 4 December 2019
Publisher : Dept. of Chemical Engineering, Diponegoro University

Compound fertilizer which combining organic-inorganic materials need to be developed to improve the effectivness of fertilizers in the soil. Filter cake as a material has highly potential to be used as a filler in physical process granulation of compound fertilizer. In this study, the particle size distribution and granule crushing strength properties were tested using 15-15-15 + 5S fertilizer compound formula, which are varied in the filler composition and K sources. Potassium sources consisted of 2 (two) types of fertilizers i.e KCl and K2SO4. Filler composition as a binder in fertilizer granulation consists of 5 combination filter cake and clay ratios (60:40, 70:30, 80:20, 90:10 and 100:0). Granulation carried out by the granulation method using pan granulator of 2 kg/batch capacity, 23 rpm rotation speed and 50o pan slope. The results of the research showed that statistically the combination of filter cake and clay 70:30 had a size distribution and hardness of granules not significantly different from standard fertilizer (100% clay). Keywords: crushing strength; filler; filter cake; granulation; size distribution

ANALISIS USAHA TANI LADA DAN ARAHAN PENGEMBANGANNYA DI KABUPATEN BANGKA TENGAH Maryadi Maryadi; Atang Sutandi; Ivanocih Agusta
Jurnal Sosial Ekonomi Pertanian (J-SEP) Vol 9 No 2 (2016)
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Indonesia is the producer of pepper number two in the world after Vietnam. Pepper is one of the leading commodity that has a major role as source of foreign exchange, the source of farmer’s income, and job creation. The high demand on the international market is an opportunity for the development of pepper pepper. In Indonesia, Bangka Belitung Province is a major producer of white pepper which one is the producing regions of District of Bangka Tengah. The development effort pepper plants must be based on land suitability evaluation for optimal production. Moreover, analyzing the feasibility of farming of pepper, analyze marketing margins in the marketing system of white pepper, and arrange referrals pepper plantation development is needed to guide policy makers in Central Bangka Regency. Pepper development requires commitment and effort which is based on plantation development policies implemented proportionately and professionally.

PEMERATAAN SEBAGAI ARAHAN RENCANA DAN STRATEGI PEMBANGUNAN WILAYAH DI KABUPATEN CIANJUR Ganjar Priadi; Atang Sutandi; Muhammad Firdaus
TATALOKA Vol 21, No 3 (2019): Volume 21 No. 3, August 2019
Publisher : Diponegoro University

Development planning with equalization approach has a purpose to create sustainable and equitable development in the future. Cianjur Regency has a focus of development policy on economic growth and equity. Different from positive results in economic growth, equitable development efforts have not been implemented properly. This study was aimed to (a) analyze the level of regional development; (b) analyze equalization of development; (c) determine factors affecting development; and (d) formulate direction of regional development plans and strategies. The method used are scalogram, theil index, panel data regression, and descriptive analysis. Results of this study indicated regional development in Cianjur Regency experienced an increase in IPK, but dominated by low hierarchy sub-districts with an average of 61.67%. Condition of equity has decreased with increasing inequality of inter-regional development. Development in Kabupaten Cianjur is significantly influenced by percentage of households using electricity, population density, and number of poor families. Future development plans and strategies must take into account factual conditions that occur for the creation of equity throughout the region.

Identifikasi Spasial Faktor-Faktor yang Mempengaruhi Permukiman Kumuh di Kota Bekasi Retno Wijayanti; Atang Sutandi; Andrea Emma Pravitasari
TATALOKA Vol 22, No 4 (2020): Volume 22 No. 4, November 2020
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/tataloka.22.4.573-585

Bekasi City is buffer city for Jakarta City which have high attraction for people to urbanize. It have consequences of the emergence of many urban areas issues such as slum area. The slums handling by the government has been running intensively since 2016. Objectives of the study were 1) Analyze of spatial distribution patterns in slum area in Bekasi City 2) Analyze of key factors which affects slum area in Bekasi City. Data were analyzed using spatial analysis, i.e Moran Index analysis, spatial mean center analysis, spatial standart deviation analysis, multiple linear regression and Geographically Weighted Regression (GWR). The result of the analysis showed that the spatial pattern of slum areas in Bekasi City in 2016 and 2018 has changed. The Morans Index analysis in 2016 showed that the spatial pattern of the slum distributuon was clustered pattern, whereas in 2018 was random pattern. The spatial mean center and standart deviation ellips analysis showed that the slums moving towards southern of Bekasi City. The influenced factor of slum in 2016 was the number of low income people. Meanwhile in 2018, it were the number of of slums in each district, the percentage of poor children who does not attending school, the value of district development index, the number of low income people and the percentage of residential buildings that does not own building permit. The GWR results showed the five factors above have different effects on each location. Based on the result of the study showed that the slums is not only influenced by the physical factors but alson non physical factors caused the percentage of slum families increasing in Bekasi City.

ARAHAN KEBIJAKAN PENGENDALIAN KONVERSI LAHAN SAWAH DI KOTA SOLOK Siska Nofita; Santun R.P Sitorus; Atang Sutandi
TATALOKA Vol 18, No 2 (2016): Volume 18 Number 2, May 2016
Publisher : Diponegoro University

Paddy field conversion occurs along with population growth followed by increased need for non-agricultural land. This research aims to formulate the direction control of paddy field conversion in Solok. Therefore it is necessary to analyze, they are scalogram analysis, and stepwise regression analysis. Paddy fields conversion in period of 2004-2014 in the Solok city 32,28 ha, mostly in the Lubuk Sikarah District. The threat of paddy fields conversion based of RTRW Solok city 2012-2031 is 403,60 ha (41,55%). Most of the villages in Solok belong to Hierarchy 1 except IX Korong with hierarchy 2 and Laing with hierarchy 3. The factors affecting of paddy field conversion in Solok city is land and building tax, land tittling, and the allocation of land for industrial, low density residential, high density residential, worship, and paddy fields allocation in the RTRW. Control direction of paddy field conversion in Solok city is to raise taxes on non-agriculture land, increasing the role of traditional institutions, community leaders and agricultural extension, zoning by setting RDTR of Solok city, determination of food sustainable agricultural land (LP2B) and repair damaged irrigation networks.

ANALISIS USAHA TANI LADA DAN ARAHAN PENGEMBANGANNYA DI KABUPATEN BANGKA TENGAH Maryadi Maryadi; Atang Sutandi; Ivanovich Agusta
TATALOKA Vol 18, No 2 (2016): Volume 18 Number 2, May 2016
Publisher : Diponegoro University

IMPACT OF BRACHIARIA, ARBUSCULAR MYCORRHIZA, AND POTASSIUM ENRICHED RICE STRAW COMPOST ON ALUMINIUM, POTASSIUM AND STABILITY OF ACID SOIL AGGREGATES Bariot Hafif; Supiandi Sabiham; Iswandi Anas; Atang Sutandi Sutandi; Suyamto Suyamto
Indonesian Journal of Agricultural Science Vol 13, No 1 (2012): April 2012
Publisher : Indonesian Agency for Agricultural Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/ijas.v13n1.2012.p27-34

Acid soil is commonly grown with cassava, which in general, tolerate low soil fertility and aluminum (Al) toxicity. However, without any improvement efforts such soil will become worse. Intercropping cassava with Brachiaria decumbens (BD) which adapts to acid soil and tolerates low fertility soils as well as application of arbuscular mycorrhiza (AM) and organic matters are among the important efforts to rehabilitate this soil. The experiment was conducted to examine the impact of BD, AM, and potassium (K) enriched rice straw compost on exchangeable Al, available K, and stability of soil aggregates. Experiment was arranged in a completely randomized design with three factors and three replications. The first factor was BD as cassava intercropping, the second factor was AM, and the third factor was 2 t ha-1 rice straw compost enriched with 0 kg, 50 kg, 100 kg, and 200 kg KCl ha-1. Brick pots (1 m length x 1 m width x 0.45 m depth) filled with Kanhapludult soil was used for growing cassava in which row of BD was planted at 60 cm from cassava stem. K-enriched rice straw compost and AM (10 g per stem) were applied around cassava stem at 2 and 12 days after planting, respectively. BD was cut every 30 days and the cutting was returned to the soil. Soil exchangeable Al was analyzed at 0, 3, 6 and 9 months after planting (MAP), while Al and K contents as well as aggregate stability were measured at 6 MAP. The results showed that planting BD decreased 33% exchangeable Al, which means that the root exudates of this grass was effective in detoxifying Al3+. Treatment of BD and/or in combination with AM was effective in preserving K added to the soil, increasing total polysaccharides, and improving soil aggregate stability. This indicated that planting BD and applying AM and Kenriched rice straw compost improved acid soil fertility, and therefore can be recommended in cassava cultivation.

PENGARUH PENGELOLAAN AIR DAN GENOTIPE PADI TERHADAP KERACUNAN BESI DAN PRODUKTIVITAS PADI DI LAHAN PASANG SURUT TIPE LUAPAN B DI SUMATERA SELATAN Siti Maryam Harahap; Munif Ghulamahdi; Sandra Arifin Aziz; Atang Sutandi; , Miftahudin
Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Vol 17, No 2 (2014): Juli 2014
Publisher : Balai Besar Pengkajian dan Pengembangan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jpptp.v17n2.2014.p%p

The Effect of Water Management and Rice Genotypes to Against Toxicity of Iron and Productivity of Rice in Tidal Land Type B in South Sumatera. Tidal land is one of the alternative land to support increased productivity of rice, but rice productivity in this area is still low, and the land utilization is not optimal yet. One factor is high iron content in the soil that can be toxic to plants. The purposes of this study were (1) to determine the effect of water management and rice genotype, as well as their interaction on the percentage of leaf bronzing, growth and yield of rice in tidal lands, (2) to select an alternative combination of water management and rice genotypes that may increase rice yields in tidal land. This study was conducted from February until June 2013 in the tidal area with type B overflow, Mulia Sari village, Banyu Asin regency, South Sumatera. The experimental design used was a split plot design with three replications. The main plot was water management with four levels, while the subplot was rice genotypes consisted of three genotypes. The results showed that water management and its interactions with plant genotypes had significant effect only on the percentage of bronzing, Fe content in shoot, and Fe content in root crops, while the plant genotype significantly affected all observed variables. The use of genotypes tolerant to iron toxicity (Indragiri) combined with (form stagnant and saturated water management) drainage with intervals of two weeks could give yield 6.8 and 6.2 t/ha respectively.Keywords : Water management, genotype paddy, tidal landABSTRAKLahan pasang surut merupakan salah satu lahan alternatif untuk mendukung peningkatan produksi padi, tetapi produksi padi di lahan ini masih rendah, dan pemanfaatan lahannya belum optimal. Salah satu faktor penyebabnya adalah adanya senyawa besi dalam tanah yang dapat meracuni tanaman. Tujuan penelitian ini adalah (1) untuk mengetahui pengaruh pengelolaan air dan genotipe tanaman padi serta interaksinya terhadap hasil padi di lahan pasang surut, (2) memilih alternatif kombinasi pengelolaan air dan genotipe tanaman padi yang sesuai dan dapat meningkatkan hasil padi di lahan pasang surut. Penelitian ini dilaksanakan bulan Februari – Juni 2013 di lahan pasang surut tipe luapan B, Desa Mulia Sari, Kabupaten Banyu Asin Sumatera Selatan. Rancangan yang digunakan adalah Rancangan Petak Terpisah dengan tiga ulangan. Sebagai petak utama adalah pengelolaan air, yang terdiri dari empat taraf, sedangkan sebagai anak petak adalah genotipe padi, yang terdiri dari tiga genotipe (IRH108, IR64 dan Indragiri). Hasil penelitian menunjukkan bahwa pengelolaan air dan interaksinya dengan genotipe tanaman berpengaruh nyata terhadap persentase bronzing, kandungan Fe di tajuk, kandungan Fe di akar dan hasil tanaman sedangkan genotipe tanaman berpengaruh nyata terhadap semua peubah yang diamati. Penanaman genotipe tanaman toleran terhadap keracunan besi (genotipe Indragiri) yang dikombinasikan dengan drainase berinterval dua minggu dapat memberikan hasil masing-masing 6,8 dan 6,2 t/ha.

Co-Authors -, Bachtiar -, Manuwoto . ACHMADI . NURWADJEDI . Suwarno A.A. Ketut Agung Cahyawan W Abdul Hasyim Sodiq Abdul Rachim Abdurrani Muin Adhy Ardiyanto Agung Lukman Agus Sofyan Alce Ilona Noyaa Anas D Susila Anas D Susila Anas D. Susila Anas D. Susila Anas Dinurrohman Susila Andrea Emma Pravitasari, Andrea Emma Anggi Nico Flatian, SP Aris Poniman Baba Barus Bachtiar Bachtiar Bambang Paramudya Bambang S Purwoko Bandung Sahari Bandung Sahari BANDUNG SAHARI Bargowo Addianto Bariot Hafif Bariot Hafif Bariot Hafifa Basuki Sumawinata Bayu Sejati Boedi Tjahjono Budi Mulyanto Budi Nugroho Budi Nugroho Darmono Taniwiryono Darmono Taniwiryono Dedi Nursyamsi Dedi Nursyamsi Desi Nadalia Didy Sopandie Djoko Purnomo DWI ANDREAS SANTOSA Dwi Guntoro Edi Santosa Edwin Hidayat, Edwin Edy Djauhari Purwakusumah Eko Noviandi Ginting Endang Gunawan Endang Suhendang Enni Dwi Wahjunie Fahmi Arief Rahman Fahmuddin Agus Fakhrur Razie Fakhrur Razie Ganjar Priadi Gunawan Djajakirana Hadijah Siregar Handayani, Etik Puji Happy Widiastuti Happy Widiastuti Hartono, Arif Hendri Purnama Herison, Catur Hermanto Hermanto Heru B. Pulunggono Heru Bagus Pulunggono Husni Mubarok Husni Mubarok Husni Mubarok Husni Mubarok I Nyoman Sujana I Wayan Mangku I Wayan Rusastra Ibnul Qoyim, Ibnul Idris, Kamarudin Idris, Komaruddin Ilona Noyaa, Alce Indarti Puji Lestari Indriyati, Lilik Tri Irawati, Arfi Irdika Mansur Irsal Las Ishak Ishak Ishak Ishak Ishak Ishak Iswandi anas Iswandi Anas Iswandi Anas Iswandi Anas Iswandi Anas Iswandi Anas Ivanocih Agusta Ivanovich Agusta J. Sri Adiningsih K Kasmadi Kasmadi Kasmadi Kasmadi Kasmadi Khursatul Munibah Komarsa Gandasasmita Komarsa Gandasasmita Komaruddin Idris Komarudin Idris KOMARUDIN IDRIS Kukuh Murtilaksono Kusuma Handayani L. K. Darusman Latifah K. Darusman Latifah Kosim Darusman LATIFAH KOSIM DARUSMAN Lina Lathifah Nurazizah Lina Lathifah Nurazizah Luh Putu Ratna Sundari Lukman Gunarto Luthfi Izhar M. ALWI Machfud Machfud Manuwoto - MARIA BINTANG Maryadi Maryadi Maryadi Maryadi Maswar Maswar Maswar Maswar Maya Melati Meine van Noordwijk Meine Van Noordwijk Meine Van Noordwijk Miftahudin . Mimien Harianti Moh Zulfajrin Moh Zulfajrin Moh Zulfajrin Moh Zulfajrin Mohamad Rafi Muchammad Sri Saeni Muhadiono Muhadiono, Muhadiono Muhammad Amir Solihin Muhammad Amir Solihin Muhammad Ardiansyah muhammad Firdaus Muhammad Thamrin Muhammad Zulfikar Muliana Mulyawan, Ronny Munif Ghulamahdi Muya Avicienna Nabila Hanifah Natalia, Rina Nelvia Nelvia nFN Thamrin NISA RACHMANIA MUBARIK Nizam Tambusai Nizam Tambusai Novia Mustikasari Nurliani Bermawie Ohiwal, Morgan Oteng Haridjaja Paulus B.K. Santoso Priyo Cahyono Priyo Cahyono, Priyo R. Purnamayani Rachim, Djunaedi Abdul RACHMI WIDIRIANI RAHAYU WIDYASTUTI RASTI SARASWATI Retno Wijayanti Rika Andriati Sukma Dewi Rina Natalia Rury Kurniawan Ruslan - Rykson Situmorang S Susanto S. Anwar S. HADI SUTJAHJO Saeful Anwar Saeni, Muchammad Sri Safira Sukma Hanjani Sandra Arifin Aziz Santun R. P. Sitorus Santun R.P Sitorus Santun R.P. Sitorus Santun Risma Pandapotan Sitorus Santun Risma Pandepotan Sitorus Septiyana, . SETIARI MARWANTO Siska Nofita Siswanto Siswanto Siswanto Sisworo, Widjang Herry Siti Maryam Harahap Siti Maryam Harahap Siti Nurzakiah Siti Nurzakiah Siti Nurzakiah Sri Djuniwati Sri Djuniwati Sri Juniwati Sri Nico Djuniwati Sri Widodo Agung Suedy Sri Wilarso Budi Sudarsono Sudarsono . Sugiyanta Sukarman Sukarman Sumardjo Supiandi Sabiham Suprihati Suria Darma Tarigan Surjono H. Sutjahjo Susanto, Bambang Sutjahjo, Surjono H. Suwondo Suwondo Suyamto Suyamto Suyamto Suyamto Suyamto Suyamto Syaiful Anwar Syaiful Anwar Syamsul Arifin Syva Fitriana Taopik Ridwan TATI NURHAYATI Taufiq Bachtiar Taufiq Bachtiar Thamrin, nFN Toyip Toyip Untung Sudadi W. Hartatik Widiatmaka Yadi Setiadi

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