Chand, Attar <br/><br/>
Environmental challenges 

 - Delhi  ; Udh Publishers  , 1985 
 - xlvi,335p. 
<br/><br/><label>ISBN: </label> 250 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Problems
<br/><br/><label>Dewey Class. No.: </label>363.7  / CHA