"Trivedi, P R" <br/><br/>
"Encyclopaedia of Environment, Pollution, Planning and Conservation" 

 - \\200000ENGGPMX 
 - Aph Publishing  2000  New Delhi 
 - 226p. 
<br/><br/> includes index and biblioraphy 
<br/><br/><label>ISBN: </label>8176480002