Gordis, Leon,   1934-  <br/><br/>
Epidemiology / 
Leon Gordis. 
 - 4th ed. 
 - Philadelphia :   Elsevier/Saunders,   c2009. 
 - xv, 375 p. :  ill. (chiefly col.), maps (chiefly col.) ;   26 cm. 
<br/><br/><label>ISBN: </label>9781416040026 (pbk.)  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology.<br/>Epidemiologic Methods.
<br/><br/><label>Dewey Class. No.: </label>614.4  / GOR 2009