Verma, P.S. <br/><br/>
Environmental Biology (Principles of Ecology) 
P.S. Verma, V.K.Agarwal 
 - New Delhi  S. Chand  2005 
 - viii,591 
<br/><br/> Includes bibliographical references and Index 
<br/><br/><label>ISBN: </label>8121908590 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>Dewey Class. No.: </label>574.5  / VER P5