P C Aw <br/><br/>
1981 Directory on the clay sand and rock based industries in Peninsular Malaysia (VOL. 2) 

 - C 553 AWP - IM 8/1983 V2 
 - Ipoh Perak  Jabatan Penyiasatan Kajibumi Malaysia  1983 
 - ill:45p. 29.8 cm