Ray, P.. <br/><br/>
Ecological imbalance of the ganga river system : its impact on aquaculture /  
by P. Ray. 
 - /   . 
 - New Delhi :   Daya Publishing House ,   1998. 
 - 241p. :   figures ;   26cm .  
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>8170351952  RS695.00 
<br/><br/><label>Subjects--Index Terms: </label>ECOLOGY 
<br/><br/><label>Dewey Class. No.: </label>577.64  / RAY/E