Edward Jenner (1 янв 1749 г. – 1 янв 1823 г.)
Описание:
A doctor in England in the late 1700s, he discovered that milk maids did not get smallpox, and used empirical research to discover that cowpox could be used as an inoculation against smallpox.Добавлено на ленту времени:
Дата:
1 янв 1749 г.
1 янв 1823 г.
~ 74 years