Asthana, D K <br/><br/>
A Textbook of Environmental Studies 

 - 6 
 - New Delhi  S Chand  2010 
 - 460 
<br/><br/> Content:<br/>The Life support system on our planet<br/>Natural resources<br/>Biodiversity<br/>Environmental pollution<br/>Social issues  & the environment<br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>574.5 AST.AST