Gordis, Leon. <br/><br/>
Epidemiology / 
by Leon Gordis. 
 - Philadelphia, Pa. :  W.B. Saunders Company,  1996. 
 - x, 277 p. :  ill. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0721651372 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology.