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Morti nel 1856
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Gran geometría rusa. Nikolai Ivanovich L…
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Nikolai Lobachevsky (The great Russian mathematician)
YouTube · Hubble G · 899 次播放 · 2020年5月16日
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Nikolai Lobachevsky
YouTube · WikiAudio · 1473 次播放 · 2016年1月22日
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