Rao,P.L.Diwakar <br/><br/>
Pollution control Handbook 1986  Towards sustained development / P.L.Diwakar Rao 

 - Hyderabad  Utility publication ltd  1986 
 - 339p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution control<br/>Social problem