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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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7 gen 1894 anni - William Ramsay discovers the Noble Gases
Aggiunto al nastro di tempo:
Periodic Table Timeline
By
E
10 ott 2017
0
0
572
Data:
7 gen 1894 anni
Adesso
~ 131 years ago
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