Rana, S.V.S. <br/><br/>
Essentials of ecology and environmental science 
/ S.V.S. Rana 
 - 4th ed. 
 - New Delhi  : PHI Learning  ,2009. 
 - x,568p.  ;23cm. 
<br/><br/><label>ISBN: </label>9788120338944  ₹295.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Environmental sciences
<br/><br/><label>Dewey Class. No.: </label>577  / R185E