Duggal, K.N <br/><br/>
Element of environmental engineering 
K.N, Duggal 
 - New dehill  S.Chand  1966 
 - xvii,440p.;ill  Pbk 
<br/><br/><label>ISBN: </label>8121927927 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental engineering
<br/><br/><label>LC Class. No.: </label>TA171.D8 1966