Bedi, Yash Pal <br/><br/>
Handbook of preventive and social medicine community health 

 - 7th ed. 
 - New Delhi  CBS Publisher  2018 
 - 298 
<br/><br/><label>ISBN: </label>9789387085787 
<br/><br/><label>Dewey Class. No.: </label>613. BED