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1 feb 2009 año - ГОСТ Р 53620-2009

Descripción:

Информационно-коммуникационные технологии в образовании. Электронные образовательные ресурсы. Общие положения;

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Federal laws on distance education

ByАлексей

21 nov 2019

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fecha:

1 feb 2009 año

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