Duggal, K N <br/><br/>
Elements of public health engineering / 
Duggal, K N 
 - 4 ed. 
 -  S Chand & Co. Pvt Ltd., New Delhi,  1991 
 - p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public health & related topics
<br/><br/><label>Dewey Class. No.: </label>614 DUG-E4