Friedman, Gary D. <br/><br/>
Primer of epidemiology / 
Gary D. Friedman. 
 - 3rd ed. 
 - New York :  McGraw-Hill Book Com,  1987. 
 - xiv, 305 p. :  ill. ;  21 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0070224366 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology.