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Anestecia (jul 1, 1842 – nov 1, 1846)

Description:

Varios científicos descubre que ciertas sustancias químicas pueden ser utilizadas como anestésico

Added to timeline:

Nicol Dayana Rincon Guerrero

25 Sep 2018

1

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1067

Date:

jul 1, 1842

nov 1, 1846

~ 4 years and 4 months

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