Jekel, James F. <br/><br/>
Epidemiology, biostatistics, and preventive medicine  

 - 2nd ed. 
 - Philadelphia :  W.B. Saunders,  2001. 
 - ix, 417 p. :  ill. (some col.) ; 
<br/><br/><label>ISBN: </label>0721690793  9780721690797 
<br/><br/><label>LC Class. No.: </label>MED RA421  / J4 2001