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23 h 14 m, 12 abr 1955 año - the vaccine was released for use in the United States.
Añadido al timeline:
15 dic 2017
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Chapter 20 The Postwar Years U.S. in the 1950s Timeline
fecha:
23 h 14 m, 12 abr 1955 año
Ahora mismo
~ 66 years ago
