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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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7 сент 1952 г. - Salk created first Polio Vaccine
Описание:
This vaccine carries inactivated polio and an infection is needed.
Добавлено на ленту времени:
The history of diseases that changed society, civilization, and life of humans
By
ianop44
14 дек 2018
1
0
582
Дата:
7 сент 1952 г.
Сейчас
~ 73 г назад
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