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Citations

Variolation (precursor of smallpox vaccination), 1960 - 1990-07-30, GBR/1928/NRI/SCC2/301. Needham Research Institute.

Variolation (precursor of smallpox vaccination), 1960 - 1990-07-30, GBR/1928/NRI/SCC2/301. Needham Research Institute. https://archivesearch.lib.cam.ac.uk/repositories/21/archival_objects/330870 Accessed July 14, 2024.

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