NAIR (P K G). <br/><br/>
Principles of environmental biology. 

 - Bombay  Himalaya Publishing House  1990 
 - 188 
<br/><br/><label>ISBN: </label>81 7040 171 2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental biology
<br/><br/><label>Dewey Class. No.: </label>574.5 NAIP