Gupta, Piyush;Ghai, O.P <br/><br/>
Textbook of preventive and social medicine 

 - Second 
 - New Delhi  CBS Publications  2007 
 - 854 
<br/><br/><label>ISBN: </label>81-235-1457-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Community Medicine (614.44)
<br/><br/><label>Dewey Class. No.: </label>614.44