ANTONOV, I I <br/><br/>
WORLD INCIDENCE OF SMALLPOX IN 1963.  [electronic resource] 

 -  WHO chronicle  Oct 1964 
 - 376-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0042-9694 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Incidence<br/>Smallpox<br/>Variola virus