_Methods in observation epidemiology .-2nd ed. Jennifer L.Kelsey  

 - New York Oxford 1996  
 - 432p.;ill  
<br/><br/> Includes index.   Includes index.  
<br/><br/><label>ISBN: </label>195083776 
<br/><br/><label>Subjects--Topical Terms: </label><br/>_Epidemiolgy 
<br/><br/><label>LC Class. No.: </label>RA652.4 .K45 1996