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01-March-2019 Friday
(091-092/366) On February 29, the first tabulator and its inventor were born, and on March 1, the periodic table was born

(091-092/366) On February 29, the first tabulator and its inventor were born, and on March 1, the periodic table was born - My, Project calendar2, Drawing, Illustrations, , Data processing, Periodic system, Mendeleev table, Longpost

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Illustrations Data processing Periodic system Project calendar2 Drawing Mendeleev table Табулятор

29-February-2016 Monday
Tabulator

Video Interesting Story Табулятор

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