Agarwal, V K. <br/><br/>
Ecology : environmental biology : questions and answers   

 - New Delhi :   S Chand Publication,  2004. 
 - XXIII, 539 ;  
<br/><br/><label>ISBN: </label>8121923743 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Life Sciences
<br/><br/><label>Dewey Class. No.: </label>628.12  / AGA