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12 ago 1955 ano - The Poliomyelitis Vaccination Act was passed by Congress and signed by President Eisenhower. This act provided 9.8 million doses.
Adicionado na linha do tempo:
eee
By
Sophie
26 nov 2017
0
0
405
Data:
12 ago 1955 ano
Agora
~ 68 years ago
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