Aw, P. C. <br/><br/>
Planned exploitation of rock resources in Perak 
P. C. Aw. 
 -  1975 
 - 25p.  ill., maps  30cm 
<br/><br/>Includes bibliographical references 
<br/><br/> Rocks, like are and minerals, are wasting assets. These non-renewable resources call for orderly development so as to prevent indue waste. In this context, the limestone hills, because of their physical nature, are of aesthetic, religious, recreational and social values. Futhermore, because of their chemical composition, they are important industrial raw materials. In order to prevent extravagant waste,  are source appraisal is important at this juncture, so that its development and management will be based on an estimate of future needs in relation to the available resources. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rocks, Igneous--Perak<br/>Sediments (Geology)--Perak<br/>Geology, Economic--Perak
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Perak