Fletcher, Robert H. <br/><br/>
Clinical epidemiology :  the essentials / 
Robert H. Fletcher, Suzanne W. Fletcher, Edward H. Wagner. 
 - Baltimore :  Williams & Wilkins,  c1982. 
 - xi, 223 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0683032526 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clinical epidemiology.<br/>Epidemiology.
<br/><br/><label>LC Class. No.: </label>RA652  / .F55 1982 
<br/><br/><label>National Library of Medicine Call No.: </label>WA 105 F614c