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1 jan 2007 ano - ГОСТ Р 52657-2006. Информационно-коммуникационные технологии в образовании. Образовательные интернет-порталы федерального уровня. Рубрикация информационных ресурсов

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ByВасилий Серебренников
21 nov 2019
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1 jan 2007 ano
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~ 18 years ago
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