Encyclopaedia of environmental pollution 
P N Prasad ; T R Amarnath 
 - New Delhi  Crescent Publishing Corporation  c2009 
 - 10 v. ; 23 cm 
<br/><br/> Includes Index 
<br/><br/><label>ISBN: </label>9788183421867 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Other social problems & services
<br/><br/><label>Dewey Class. No.: </label>363.703 PRA.5