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Unvac. Prof. Dr. https://teapawt.net/t.co/FfR4Y16Rjw ←『おいそれと帰農できない理由について』(2007)、『崩壊5段階説』(2015)、『ウィトルウィウスの数学謎々』(2021)など

Ishikawa, Japan
Joined October 2009
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