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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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19 mayo 1808 año - Discovery of Calcium (Humphry Davy)
Añadido al timeline:
Periodic Table Timeline
By
MICHELLE MORGAN SILLER
6 dic 2018
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358
fecha:
19 mayo 1808 año
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~ 217 years ago
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