YADAV, P.R. <br/><br/>
Environmental biology 

 - New Delhi  Discovery pub.  2004 
 - 302 p. 
<br/><br/><label>ISBN: </label>8171417566 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>Dewey Class. No.: </label>577  / YAD