Dissanayake, C. B <br/><br/>
Gem-bearing stream sediments of Sri Lanka geology and geochemistry 

 - Colombo   National Gem and Jewellery Authority  2003 
 - xix, 121p. 
<br/><br/><label>ISBN: </label>9559371029 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOLOGY<br/>GEM
<br/><br/><label>Dewey Class. No.: </label>B3134  / LDC