Preliminary kaolin investigation in Tapah - Bidor Areas,Perak, by P. C. Aw - Aw, P. C.; Malaysia. Jabatan Penyiasatan Kajibumi (Ipoh, Ibu Pejabat Penyiasatan Kajibumi, 1978, 1980)
Keywords: Kaolin - Perak, Investigative reporting - Perak