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26 март 1953 г. - Polio

Описание:

Dr. Jonas Salk tells the public that he's come up with a vaccination for Polio. In April of 1955 it was said that his vaccination for it was effective and safe.

Добавлено на ленту времени:

Historical events

ByHailey Wessel
14 дек 2017
0
0
448

Дата:

26 март 1953 г.
Сейчас
~ 72 г назад

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