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

 - 4th. ed. 
 - Uk  ELBS  1982 
 - 173p.  ill. 
<br/><br/><label>ISBN: </label>04433044244 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology
<br/><br/><label>LC Class. No.: </label>MED RA652.4  / B37