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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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27 janv. 1991 - En 1991 La poliomielitis se eliminó oficialmente de los Estados Unidos y del resto del hemisferio occidental gracias a la vacuna.
Ajouté au bande de temps:
vacyna
By
Reyna Avelar
16 nov. 2017
0
0
382
Date:
27 janv. 1991
Maintenaint
~ Il y a 34 ans
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