Fletcher ,W. <br/><br/>
Clinical Epidemiology: the essentials, 

 - 4 
 -  LWW  2005 
 - 252,P.  NO 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidermiology
<br/><br/><label>Dewey Class. No.: </label>614.5  / FLE