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Игорь Острецов
@igorostrecov
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Канал Игоря Николаевича Острецова: https://youtube.com/@IgorOstrecov По всем вопросам – igor.n.ostrecov@gmail.com @OstrecovIN_bot
ScienceРусский RU
Source: public Telegram profile
Last checked: 29.10.2026
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