Friis, Robert H. <br/><br/>
Epidemiology for public health practice / 
Robert H. Friis, Thomas A. Sellers. 
 - 4th ed. 
 - Sudbury, Mass. :  Jones and Bartlett Publishers,  2009. 
 - xxii, 717 p. :  ill., port.  23 cm. +  1 student study guide. 
<br/><br/><label>ISBN: </label>9780763751616  RM287.56 9781449612573 (student study guide) 9781449613617 (set) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology.<br/>Public health.