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Credit
Kritik der Vaccinations-Statistik und neue Beiträge zur Frage des Impfschutzes. : Denkschrift an den IX. Internationalen Medicinischen Congress zu Washington, 1887 / von Josef Kőrösi. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.