Kumar. H. D. <br/><br/>
Modern  Concepts  of  Ecology 

 - 8th /   2010. 
 - Delhi:  Vikas  Publishing  House  Pvt.  Ltd.,  2010. 
 - 478p. 
<br/><br/><label>Subjects--Personal Names: </label><br/> Botany, Ecology. 
<br/><br/><label>Dewey Class. No.: </label>577