CROSS, R M <br/><br/>
Observations on the classification and interpretation of reactions to smallpox vaccination.  [electronic resource] 

 -  Bulletin of the World Health Organization  1961 
 - 7-17 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0042-9686 
<br/><br/><label>Subjects--Topical Terms: </label><br/>England<br/>Humans<br/>Mass Vaccination<br/>Smallpox--immunology<br/>Smallpox Vaccine<br/>Vaccination--complications