P C Aw <br/><br/>
Wing Sang Cheong tin mine Ipoh Perak a case syudy of mining and quarrying on the same site ( C1 ) 

 - C 553 AWP - IM 2/1983 
 - Ipoh Perak  Jabatan Penyiasatan Kajibumi Malaysia  1983 
 - ill:16p. 29.8 cm