Rabindranath Roy,Indranil Saha <br/><br/>
Mahajan and Gupta text book of preventive and social medicine 

 - 4 
 - New Delhi  Jaypee Borthers  2013 
 - 703 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Community Medicine (614.44)<br/>Community Medicine (614.44)