Baxby, Derrick. <br/><br/>
Jenner's smallpox vaccine : the riddle of vaccinia virus and its origin 

 - London   Heinemann Educational Books,  1981. 
 - xiv, 214 p. :  ill. ;index 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0435540572 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Smallpox vaccine<br/>Physicians
<br/><br/><label>LC Class. No.: </label>MED QR189.5.S6  / B38