Some studies on the selection and efficiency of live influenza vaccine viruses
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Citation
Tyrrell, D. A. J. & Beare, A. S. (1969). Some studies on the selection and efficiency of live influenza vaccine viruses. Bulletin of the World Health Organization, 41 (3-4-5), 579 - 584. World Health Organization. https://iris.who.int/handle/10665/262519