Singh, H. R. <br/><br/>
Environmental biology / 
by H. R. Singh  
 - New Delhi :  S. Chand& Company Ltd ,  2005 . 
 - 210 p.  Paper Back 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Organism<br/>Environment<br/>Biotic community
<br/><br/><label>Dewey Class. No.: </label>577  / SIN-E