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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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20 jun 1954 año - En E.U se prueba una nueva vacuna contra la polio
Añadido al timeline:
ACONTECIMIENTOS DE 1900-2018
By
karen Zamora
24 nov 2018
0
0
650
fecha:
20 jun 1954 año
Ahora mismo
~ 71 years ago
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