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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1962 año - Joseph Sabin created live vaccine
Descripción:
replaces Salk killed vaccine
Añadido al timeline:
B HLTH 224
By
Kelly Stevens
13 dic 2018
1
0
908
fecha:
1 ene 1962 año
Ahora mismo
~ 63 years ago
Fotos:
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