dragonhalff: (Default)
dragonhalff ([personal profile] dragonhalff) wrote2018-02-16 10:04 pm
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Владимир Сперантов: "Три языка оптики"

наглядная физика, наш Уолтер Левин, можно смотреть все видео по поиску "Владимир Сперантов"

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