Agarwal, K. C. <br/><br/>
Environmental biology 

 - 2nd Edition 
 - Bikaner  Agro Botanical  1993 
 - 584p. 
<br/><br/><label>ISBN: </label> RS 400.00 
<br/><br/><label>Source: </label> RS 400.00 
<br/><br/><label>Dewey Class. No.: </label>574.5 AGR