Fletcher, Robert H. <br/><br/>
Clinical epidemiology : 

 - 2nd ed. 
 - Baltimore :  Williams & Wilkins,  1988. 
 - xiii, 246 p.   ill.  
<br/><br/><label>ISBN: </label>0683032518 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clinical epidemiology.<br/>Epidemiologic Methods.
<br/><br/><label>LC Class. No.: </label>MED RA652.2.  / C55F57