Rana, S V S <br/><br/>
Essentials of ecology and environmental science 
S V S Rana 
 - New Delhi  Prentice-Hall  2003 
 - xi, 368p. 
<br/><br/><label>ISBN: </label>9788120323209 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Environmental sciences<br/>Environmental protection.
<br/><br/><label>Dewey Class. No.: </label>577 R15e