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Campaña de vacunación mundial para erradicar la viruela (jan 1, 1950 – jan 1, 1980)

Description:

En un esfuerzo internacional, la ONU lanza una campaña mundial para erradicar la viruela.

Added to timeline:

Fechas importantes en biología

19 Mar 2023

0

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911

Date:

jan 1, 1950

jan 1, 1980

~ 30 years

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