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    The effective modes of infrared radiators and heating systems

    The effective modes of infrared radiators and heating systems by Ptitsyna Elena, Kuvaldin Alexander, Ptitsyn Dmitry

    Published 2019-01-01
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  2. 2
    Increasing the efficiency of teaching Russian as a foreign language in the context of distance learning

    Increasing the efficiency of teaching Russian as a foreign language in the context of distance learning by Altukhova Olga Nikolaevna, Vorobeva Galina Vasilevna, Ingemansson Arvid Ronaldovich, Ptitsyna Elena Aleksandrovna, Tiumentseva Elena Vladimirovna

    Published 2021-01-01
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