Vaccination against poliomyelitis in Poland with types 1 and 3 attenuated viruses of Koprowski*

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Kostrzewski, J., Kulesza, A. & Załeska, H. (1962). Vaccination against poliomyelitis in Poland with types 1 and 3 attenuated viruses of Koprowski*. Bulletin of the World Health Organization, 26 (6), 745 - 758. http://www.who.int/iris/handle/10665/267571