Barker, D.J.P <br/><br/>
Practical epidemiology 

 - 2nd ed. 
 - Edinburgh  Churchill Livinstone  1976 
 - [6], 180 P.  Illustration 
<br/><br/><label>ISBN: </label>0443019320 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology
<br/><br/><label>Dewey Class. No.: </label>614.4  / B16