Herath, J.W. <br/><br/>
Mineral based industries of Sri lanka 

 -  Natural resources energy and science authority  1986 
 - 87p.,map., ill.,  22 cm 
 - Science education No. 15 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Universal Decimal Class. No.: </label>(x)622  / HER