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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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18 magg 1919 anni - Francis William Aston used a mass spectrograph to identify 212 isotopes.
Aggiunto al nastro di tempo:
Final Timeline
By
Tommy Worcester
27 set 2017
0
0
732
Data:
18 magg 1919 anni
Adesso
~ 106 years ago
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