Trivedi.R.P <br/><br/>
Encyclopediya Of Environment, Pollution Planning And Conservation 

 - New Delhi  A.P.H Publishing Corporation  1998 
 - vii,161p. 
<br/><br/><label>ISBN: </label>81-7648-000-2 
<br/><br/><label>Dewey Class. No.: </label>363.703