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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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15 dic 1643 año - Blaise Pascal develops the first mechanical calculator
Añadido al timeline:
Charm of Music Midterm - Juhi Vazirani
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Juhi Vazirani
3 oct 2017
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15 dic 1643 año
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~ 382 years ago
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