Paul, John Rodman,  1893-1971 <br/><br/>
Clinical epidemiology / 
by John R. Paul 
 - Rev. ed. 
 - Chicago :  The University of Chicago Press,  1966 
 - 305 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>0226649970 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology