Friedman, Gary D.,  1934 - <br/><br/>
Primer of epidemiology / 
by Gary D. Friedman 
 - 4th ed. 
 - New York :  McGraw-Hill,  1994 
 - 366 p. :  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>0070224544 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology