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Jean Baptiste Dumas, Leopold Gmelin, Ernst Lenssen, Max von Pettenkofer, and J.P. Cooke discovered 10 new elements. (30 dic 1829 año – 22 feb 1858 año)
Añadido al timeline:
Periodic Table Timeline
By
Jessica Maeda
16 dic 2017
0
0
544
fecha:
30 dic 1829 año
22 feb 1858 año
~ 28 years
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