Friedman, Gary D. <br/><br/>
Primer of epidemiology / 
by Gary D. Friedman 
 - New York :  McGraw-Hill,  1980 
 - 288 p. :  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>007022434X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology