Fletcher Robert H., Fletcher Suzanne W., Wagner Edward H. <br/><br/>
Clinical epidemiology  the essentials 

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 - Baltimore  Williams and Wilkins  1982 
 - 223 p.  23 cm. 
 -   .
<br/><br/>  
<br/><br/>  Epidemiology 
<br/><br/><label>ISBN: </label>0683032526 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology
<br/><br/><label>Dewey Class. No.: </label>WA105  / FLE