Verma, P.S.  Agarwal, V.K. <br/><br/>
Environmental biology  (Principles of ecology) 

 - 1 
 - New Delhi  S. Chand  2000 
 - viii, 591 
<br/><br/>Includes 
<br/><br/><label>ISBN: </label>8121908590 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology Ecology 
<br/><br/><label>Dewey Class. No.: </label>574.5/V522e