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4 июл 1886 г. - Elisha Bartlett la primera en justificar matemáticamente el uso del grupo control

Добавлено на ленту времени:

Desarrollo histórico de la epidemiología

ByEduardo
26 янв 2018
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0
1044

Дата:

4 июл 1886 г.
Сейчас
~ 138 г назад
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