Kumar, H D. <br/><br/>
Modern concept of ecology   

 - New Delhi :   Vikas Publication,   1992. 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Life Sciences
<br/><br/><label>Dewey Class. No.: </label>628.12  / KUM