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Svet-Moldavskaya, I. A ,  Marennikova, Svetlana ,  Akatova-Shelukhina, E. M ,  Ogorodnikova, Z. I ,  World Health Organization. Expert Committee on Smallpox. Meeting (1964 : Geneva, Switzerland) ,  [Comparative study of the virus neutralising antibody levels and types of skin reaction in smallpox revaccinated persons / by Svet-Moldavskaya I.A., Marennikova S.S., Acatova-Sheluchina E.M., Ogorodnikova Z.T]

Polak, M. F ,  World Health Organization. Expert Committee on Smallpox. Meeting (1964 : Geneva, Switzerland) ,  [The relation between potency of vaccine used in smallpox vaccination and immunity produced / by M.F. Polak]