Laporan PPM K030/2008 : Laporan Kursus 'Technical Talk On Quarry Sand' Di Hotel Holiday Villa, Subang Jaya, 28 Jun 2008 Nasharuddin b. Isa - Perak Pusat Penyelidikan Mineral, Jabatan Mineral Dan Geosains Malaysia 2008 - 3 p. ill., 29 cm