Renwick, A. <br/><br/>
Summary of investigation into possible sources of raw material (shale/clay) for leca (light expanded concrete aggregate) 
A. Renwick. 
 -  1962 
 - 5 p.  30 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minerals--Malaysia<br/>Geology, Economic--Malaysia