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31 déc. 1974 - По результатам эксперимента были утверждены программа и учебник «Природоведения» для 2 класса З.А. Клепининой.

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ByАнна Панфилова

15 oct. 2017

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Date:

31 déc. 1974

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~ Il y a 50 ans

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