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Сайт на български: https://bg.khanacademy.org &#13;
YouTube канал: https://www.youtube.com/c/khanacademybulgarian</text>
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Сайт на български: https://bg.khanacademy.org &#13;
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Сайт на български: https://bg.khanacademy.org &#13;
YouTube канал: https://www.youtube.com/c/khanacademybulgarian</text>
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