Kumar, Har Darshan. <br/><br/>
Modern concepts of ecology / 
H. D. Kumar 
 - 8th rev. ed. 
 - New Delhi :  Vikas Publishing ,  1995, repr., 2011. 
 - 478 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Human ecology.
<br/><br/><label>Dewey Class. No.: </label>574.5