Mahajan B K <br/><br/>
Textbook of preventive and social medicine 

 - New Delhi   Jaypee brothers medical Publications Pvt L td    
 - 439p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y9(L).2.N9, N1/TD