Duggal,K.N. <br/><br/>
Elementsof environmental engineering 
K.N. Duggal 
 - New Delhi  S,Chand  2004 
<br/><br/><label>ISBN: </label> Rs.115.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences,General topics of land, recreational and wilderness areas, energy
<br/><br/><label>Dewey Class. No.: </label>333.714  / D866