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18 окт 1826 г. - Semmelweis chlorine hand washing 1847

Описание:

Based on spread of childbed fever

Добавлено на ленту времени:

B HLTH 224

14 дек 2018

1

0

522

Дата:

18 окт 1826 г.

Сейчас

~ 199 г назад

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