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

 - 4 
 -  New Delhi  PHI Learning  2009 
 - xv, 568p  
<br/><br/> Reprint year 2009. Includes index 
<br/><br/><label>ISBN: </label>9788120338944 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atmosphere and climate<br/>Biodiversity<br/>Biosphere<br/>Earth<br/>Ecology<br/>Environmental adaptations<br/>Hydrosphere<br/>Lithosphere<br/>Nitrogen cycle