Venugopala Rao P. <br/><br/>
Principles of Environmental Science and Engineering 

 - New Delhi  PHI  2006 
<br/><br/><label>ISBN: </label>0000048343 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Environmental <br/> Principles <br/> Science<br/>Engineering <br/>Water supply & sanitary Engg
<br/><br/><label>Dewey Class. No.: </label>628.1