Environmental pollution:   Water 

 - New Delhi:   Venus Publishing House,   1992 
 - 359p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Environmental science Pollution 
<br/><br/><label>Universal Decimal Class. No.: </label>628.394  / N2