Gordis, Leon. <br/><br/>
Epidemiology / by Leon Gordis. 

 - 2nd ed. 
 - Philadelphia, Pa. :  W.B. Saunders Company,  2000. 
 - xii, 308 p. : ill., maps. 
<br/><br/> Includes bibliographical references and index.  Contents : The epidemiologic approach to disease and intervention--Using epidemiology to identify the cause of disease. 
<br/><br/><label>ISBN: </label>072168338X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology.<br/>Epidemiologic methods.