Roy, Parinal. <br/><br/>
Ecological imbalances of the Ganga river system: its impact on aquaculture /  
Parimal Roy. 
 - New Delhi :   Daya Publishing House ,   1998. 
 - xi+ 1 ,241p. :   ills.,figs.,maps,tables ;   25cm. .  
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<br/><br/><label>ISBN: </label>8170351952  Rs.695.00 
<br/><br/><label>Subjects--Index Terms: </label>WATER POLLUTION 
<br/><br/><label>Dewey Class. No.: </label>577.64  / ROY/E