Duggal <br/><br/>
Elements of public health engineering 
/ K.N.Duggal 
 - Ram Nagar  S.Chand & Co.  1971 
 - 386 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental health engineering
<br/><br/><label>Dewey Class. No.: </label>628  / DUG