Friedman, Gary D. <br/><br/>
Primer of epidemiology / 
Gary D. Friedman 
 - New York :  McGraw-Hill,  1974 
 - 230p. :  ill. ;  20 cm. 
<br/><br/><label>ISBN: </label>0070224250 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology