Singh, H R <br/><br/>
Environmental biology / 
Singh, H R 
 -  S.Chand & Co. Ltd., New Delhi,  2005 
 - p. ;  22 cm. 
<br/><br/><label>ISBN: </label>9781134777624 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Life sciences; Biology
<br/><br/><label>Dewey Class. No.: </label>570 SIN-E