Rana, S. V.S. <br/><br/>
Essentials of ecology and environmental science 

 - 4th ed. 
 - New Delhi  PHI Learning  2009 
 - xv,568p. 
<br/><br/><label>ISBN: </label>9788120338944  295 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology<br/>Ecology<br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>577  / RAN