Jeffries, Michael. <br/><br/>
Fresh water ecology : principles and applications /  
Michael Jeffries, Derek Mills. 
 - New Delhi :   C B S Publishers and Distributors ,   1992. 
 - viii,285p. :   ill. ;   22cm.  CD .  
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<br/><br/><label>ISBN: </label>8123900422  NULL 
<br/><br/><label>Subjects--Index Terms: </label>FRESHWATER ECOLOGY 
<br/><br/><label>Dewey Class. No.: </label>577.6  / JEF/F