Arul, P <br/><br/>
Textbook of environmental studies 

 - Chennai  Environment Agency  2004 
 - 328p  
<br/><br/> Includes glossary and question pattern 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biodiversity<br/>Ecosystems<br/>Environmental engineering<br/>Environmental science<br/>Natural resources<br/>Pollution -- Environmental pollution<br/>Social issues  Environmental