H. D. Kumar <br/><br/>
Modern concepts of ecology 

 - New Delhi<br/>  Vikas Pub.  1977 
 - 478p. 
<br/><br/><label>ISBN: </label>0706986768 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General nature of life
<br/><br/><label>Dewey Class. No.: </label>577  / KUM