ARORA, D.K. DIWAN, A.P. <br/><br/>
ECOLOGY OF FRESHWATER ORGANISMS AND INSECTS 

 - New Delhi  Anmol Publications Pvt. Ltd., New Delhi   1995 
<br/><br/><label>ISBN: </label>81 7488 122 0 
<br/><br/><label>Dewey Class. No.: </label>577.6  / DIW/E