De , Anil Kumar . <br/><br/>
Environmental Studies /  Textual Documents 
Anil Kumar De & Arnab Kumar De. 
 - Ist ed / 
 - New Delhi :  New Age International Publishers ,  2001. 
 - 209p ;  22cm. 
<br/><br/><label>ISBN: </label>81-224-1293-9 
<br/><br/><label>Subjects--Index Terms: </label>Environmental Studies 
<br/><br/><label>Dewey Class. No.: </label>577.2  / De 34 En