Yash Pal Bedi <br/><br/>
Handbook of preventive and social medicine. 
Yash Pal Bedi 
 - ed. 16 
 -  Atma Ram  2003 
<br/><br/><label>ISBN: </label> 175 
<br/><br/><label>Dewey Class. No.: </label>614BED.N7  / 13