Jekel, James F. <br/><br/>
Epidemiology, Biostatistics and Preventive Medicine 

 - 3rd ed. 
 - Philadelphia  Saunders  2007 
 - xii, 393p. : ill. ; 28 cm. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Dewey Class. No.: </label>614.4 JEL