Laporan PPM R022/2018 : Technical Report RMKe-11 : Pre-Concentration Of Complex Gold Ore By Gravity And Magnetic Separation Techiques, December 2018 Salmah bt. Baharuddin - Perak Pusat Penyelidikan Mineral, Jabatan Mineral Dan Geosains Malaysia 2018 - iii, 20p. col.,ill., 29 cm