FLETCHER ROBERT H. <br/><br/>
CLINICAL EPIDEMIOLOGY THE ESSENTIALS 

 - 3RD 
 - PHILADELPHIA  LIPPINCOTT WILLIAMS AND WILKINS  1996 
<br/><br/><label>ISBN: </label>0-683-03269-0 
<br/><br/><label>Dewey Class. No.: </label>614.4  / 5