Sankara Pitchaiah, P. <br/><br/>
Water ecology pollution and management/ 
Dr. P.S. Sankara Pitchaiah and Sambasiva Rao 
 - Allahabad:  Chugh Pub.,  1991 
 - 2v.:  ill., maps;  22 cm. 
<br/><br/><label>ISBN: </label>8185076 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Pollution--Andhra Pradesh--India<br/>Water quality management<br/>Water--Analysis<br/>Fresh waterechology--Andhra Pradesh--India
<br/><br/><label>Dewey Class. No.: </label>628.168