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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 янв 1955 г. - IPV developed by Dr. Jonas Salk is declared “safe and effective.”
Добавлено на ленту времени:
Polio Timeline
By
Tyler Heald
19 ноя 2023
0
0
350
Дата:
1 янв 1955 г.
Сейчас
~ 70 г назад
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