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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
By
Daniel Perez
19 Mar 2023
0
0
689
Date:
jan 1, 1950
jan 1, 1980
~ 30 years
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