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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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20th century scientists found why properties of elements reoccur periodically (11 h 55 min, 1 janv. 1900 ans – 14 h 57 min, 31 déc. 1999 ans)
Ajouté au bande de temps:
History of the Periodic Table
By
Sonya Callendar
26 déc. 2017
0
0
684
Date:
11 h 55 min, 1 janv. 1900 ans
14 h 57 min, 31 déc. 1999 ans
~ 100 years
Les images:
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