Features of the organization of a day regimen and the level of ophthalmologic pathology at pupils of elementary grades of St. Petersburg - PDF (Russian)
Copyright (c) 2018 Zemlyanoy D.A., Lvov S.N., Brzhesky V.V., Efimova E.L., Puzyrev V.G., Alexandrovich I.V., Sorokina M.A.

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