Gordis, Leon <br/><br/>
Epidemiology / 
Gordis Leon 
 - Canada :  Elsevier,  2014 
 - Fifth Edition. xv,392 pages :  colour illustrations ;  27cm 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781455737338 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Disease Transmission<br/>Epidemiologic Methods