Desain Dan Realisasi Alat Ukur Massa Jenis Zat Cair Berdasarkan Hukum Archimedes Menggunakan Sensor Fotodioda - Luh Ari Anjarsari; Arif Surtono; Amir Supriyanto (Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung, 2015)