Requirements for biological substances : 5. Requirements for smallpox vaccine : report of a study group [meeting held in Geneva from 3 to 8 November 1958]. 

 - 24p. 
 - (WHO technical report series ; 180) .
<br/><br/><label>ISBN: </label>92-4-120180-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Smallpox vaccine--Standards