PENGARUH MEDIA SUSPENSI TERHADAP PROSES ULTRASONIC MILLING PADA PARTIKEL HYDROMAGNESITE[The Influence of Suspension Media on Ultrasonic Milling Process in Particle Hydromagnesite] - Eko Sulistiyono; Azwar Manaf; F Firdiyono (National Research and Innovation Agency (BRIN), 2012)