Merrill, Ray M. <br/><br/>
Introduction to epidemiology / 
Ray M. Merrill. 
 - 6th ed. 
 - Sudbury, Mass. ;  London :   Jones and Bartlett,  2013. 
 - xv,434 p. :  ill., maps ;   26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781449665487 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology .<br/>Epidemiologic Methods.
<br/><br/><label>Dewey Class. No.: </label>614.4 M R I 221