Hill, Austin Bradford, Sir,  1897- <br/><br/>
Bradford Hill's principles of medical statistics / 
by Austin Bradford Hill and I. D. Hill 
 - 12th ed. 
 - London :  Edward Arnold,  1991 
 - 339 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0340537396 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medical statistics
<br/><br/><label>National Library of Medicine Call No.: </label>WA950  / .H645p