Merrill, Ray M. <br/><br/>
Introduction to epidemiology / 
Ray M. Merrill 
 - 6th ed. 
 - Burlington, Mass. :  Jones & Bartlett Learning,  2013 
 - xviii, 434 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781449665487 9781449645175 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology<br/>Epidemiologic Methods