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14 Feb 1874 Jahr - 1874 los alemanes instituyeron la primer ley de vacunación donde se introduce la obligatoriedad de la vacunación contra la viruela a todos los niños en su primer año de vida,
Zugefügt zum Band der Zeit:
vacyna
By
Reyna Avelar
16 Nov 2017
0
0
287
Datum:
14 Feb 1874 Jahr
Jetzt
~ 150 years ago
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