Park's Textbook of Preventive and Social medicine/ 

 - 21st ed. 
 - India  Banarsidas Bhanot,  2002. 
 - 629p.  ill, 
<br/><br/>Include Index and bibliographical references 
<br/><br/><label>ISBN: </label>8190011898 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Medicine, Preventive.  <br/>Public health.
<br/><br/><label>LC Class. No.: </label>WA108