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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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2 ene 1950 año - John Hopps invented the first cardiac pacemaker
Añadido al timeline:
Waushara County Timeline Project
By
Christian Avalos
16 nov 2018
0
0
535
fecha:
2 ene 1950 año
Ahora mismo
~ 75 years ago
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