Roy R N <br/><br/>
Mahajan &Gupta Textbook of Preventive & Social Medicine 

 - 4th Ed. 
 - Delhi  Jaypee Brother  2013 
 - x-693p. 
 - B.M.S.G.B.LTD.Pune., B/5432.,28/03/2022 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>MEDICINE