Aw, P. C. <br/><br/>
1979 directory on the clay, sand and rock-based industries in Peninsular Malaysia / 
P. C. Aw [and] A. C. Ooi 
 - Ipoh :  Ibu Pejabat Penyiasatan Kajibumi,  1980 
 - 1v. (various pagings) 
 - Report of the Industrial Minerals Division; Im 17/1980 Volume 2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clay industries--Directories--Malaysia<br/>Sand--Directories--Malaysia<br/>Rocks--Directories--Malaysia