Laporan PPM K012/2008: Laporan Menghadiri 'International Conference On Environmental Research And Technology' (ICERT' 08) Di Hotel Park Royal Pulau Pinang, 28 - 30 Mei 2008 Abdul Kahar b. Embi - Perak Pusat Penyelidikan Mineral, Jabatan Mineral Dan Geosains Malaysia 2008 - 30 p. ill; some col. 29 cm