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

 - 3rd ed. 
 - Edinburgh   New York   Churchill Livingstone  1982 
 - viii, 159p.  ill.  
<br/><br/><label>ISBN: </label>0443023034  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology
<br/><br/><label>LC Class. No.: </label>RA652.  / B3