Raa, P. V. <br/><br/>
Textbook of environmental engineering. 
P.V. Raa 
 - New Delhi.  Prentice-hall  2002. 
 - xii,268p.;  ill.: Pbk.; 
<br/><br/><label>ISBN: </label>8120319303 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental engineering.