Geological Survey and Mines Bureau <br/><br/>
Sri Lanka Minerals Yearbook - 2011 

 - Dehiwala  Geological Survey and Mines Bureau  2011 
 - [4],vi,43 p. 
<br/><br/><label>ISBN: </label>9789559323709 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ANNUAL REPORT<br/>MINERALS<br/>YEARBOOK