P C Aw
Exploitation of industrial minerals from abandoned tin mines areas in Perak and Selangor - IM 5/1980 - Ipoh Perak Jabatan Penyiasatan Kajibumi Malaysia 1980 - ill:14p. 29.8 cm
Exploitation of industrial minerals from abandoned tin mines areas in Perak and Selangor - IM 5/1980 - Ipoh Perak Jabatan Penyiasatan Kajibumi Malaysia 1980 - ill:14p. 29.8 cm