Purohit, S S <br/><br/>
Water life and pollution 

 - Bikaner:   Agro Botanical Publishers,   1990 
 - 108p. 
<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  / N0