// todo need optimize like in event.jsp. Add indexing or not indexing this page. tabla periodica (jan 1, 1860 – jan 1, 1870) (Timeline)
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tabla periodica (jan 1, 1860 – jan 1, 1870)

Description:

dmitry mendeleyv se da cuenta que si todos los 63 elementos estan ordenados de mayor peso anatomico sus propiedades se repiten de acuerdo a ciertos ciclos

Added to timeline:

sofia pinzon

ByOctavo
25 Sep 2018

Date:

jan 1, 1860
jan 1, 1870
~ 10 years
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