Nnatural rubber industry 

 - Peradeniya  Central environmental authority  1992/93 
 - 29 p. 
 - Industrial pollution control guidelines .
<br/><br/><label>Subjects--Topical Terms: </label><br/>BOOK BOX 382<br/>HISTORY
<br/><br/><label>Dewey Class. No.: </label>B0382  / LDC