Roy, Nath Rabindra. <br/><br/>
Mahajan and Gupta Textbook of preventive and social medicine.  

 - New Delhi :  Jaypee,  2013. 
 - xvii, 703 p. :  ill. ;  30 cm. 
<br/><br/><label>ISBN: </label>9789350901878 
<br/><br/><label>National Library of Medicine Call No.: </label>WA 108 RT 2013