Water pollution 

 - Nanital   Gyanodaya Prakashan   1989  
 - 378 p. : 
<br/><br/><label>ISBN: </label>81-85097-16-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water.<br/>Pollution.
<br/><br/><label>Dewey Class. No.: </label>350.82325  / S64W