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Kempe, Charles Henry ,  World Health Organization. Expert Committee on Smallpox. Meeting (1964 : Geneva, Switzerland) ,  [The use of vaccinia hyperimmune gamma-globulin in the prophylaxis of smallpox / by C.H. Kempe]

World Health Organization. Expert Committee on Smallpox. Meeting (1964 : Geneva, Switzerland) ,  [International certificate of vaccination or revaccination against smallpox / prepared by the Secretariat, Certificat international de vaccination ou de révaccination contre la variole / document établi par le Secrétariat]

World Health Organization. Expert Committee on Smallpox. Meeting (1964 : Geneva, Switzerland) ,  [International certificate of vaccination or revaccination against smallpox / prepared by the Secretariat, Certificat international de vaccination ou de révaccination contre la variole / document établi par le Secrétariat]

Kempe, Charles Henry ,  World Health Organization. Expert Committee on Smallpox. Meeting (1964 : Geneva, Switzerland) ,  [The use of vaccinia hyperimmune gamma-globulin in the prophylaxis of smallpox / by C.H. Kempe]