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20 févr. 1911 - Б. Е. Райковым предложен термин «исследовательский метод» широкое применение в учебном процессе приобрели экскурсии

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ByАнна Панфилова
15 oct. 2017
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Date:

20 févr. 1911
Maintenaint
~ Il y a 114 ans
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