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Anestecia (1 lugl 1842 anni – 1 nov 1846 anni)

Descrizione:

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

Aggiunto al nastro di tempo:

Nicol Dayana Rincon Guerrero

25 set 2018

1

0

1067

Data:

1 lugl 1842 anni

1 nov 1846 anni

~ 4 years and 4 months

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