Rana, S.V.S. <br/><br/>
Essentials of ecology and environmental science 
/ by S.V.S. Rana 
 - 4th ed. 
 - New Delhi:   PHI Learning Pvt.Ltd.,   2009. 
 - xv, 568p. 
<br/><br/><label>ISBN: </label>9788120338944 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Engineering<br/>Evolution<br/>Hydrosphere
<br/><br/><label>Dewey Class. No.: </label>628  / RAN/E