Environmental water pollution and its control / 
Chhawal, G. R. & [et.. al.]. 
 - 1st ed. 
 - New Delhi :  Anmol Publications,  1993 
 - vi, 532 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>8170412145 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-Pollution 
<br/><br/><label>Dewey Class. No.: </label>363.7  / CHE