Duggal, K.N. <br/><br/>
Elements of environmental engineering 

 - New Delhi  S.Chand And Company  1997 
 - 496P. 
<br/><br/><label>ISBN: </label>9788121915472  80 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Engineering
<br/><br/><label>Dewey Class. No.: </label>628  / DUG