Friis, Robert H. <br/><br/>
Epidemiology for public health practice / 
Robert H. Friis, Thomas A. Sellers. 
 - 2nd ed. 
 - Gaithersburg, Md. :  Aspen Publishers,  1999. 
 - xiv, 506 p. :  ill., maps ; 
<br/><br/><label>ISBN: </label>0834211785 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology.<br/>Public health personnel.<br/>Epidemiology.<br/>Public Health.
<br/><br/><label>LC Class. No.: </label>RA651  / .F686 1999