Varshney  <br/><br/>
Environmental challanges 

 - New Delhi  Wiley Eastern  1993 
 - viii,131 p. 
<br/><br/><label>ISBN: </label>8122405258 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental problems and services
<br/><br/><label>Dewey Class. No.: </label>363.7  / E58