Kumar, H.D. <br/><br/>
Modern Consepts of Ecology  

 - 7 
 - New Delhi  Vikas Publishing House Pvt Ltd  1977 
 - 377 
<br/><br/><label>Publisher. No.: </label> VBS Publishers and Distributors 
<br/><br/><label>Subjects--Personal Names: </label> Environment Science 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment Science