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jan 1, 1939 - А.Н. Барсуков

Description:

«О формуле Герона» - 1939 год. Журнал «Математика в школе».

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5 этап конкурса.

ByЕлизавета Волкова

16 Feb 2023

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Date:

jan 1, 1939

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~ 87 years ago

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