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桜島の火山活動と火山災害について On Volcanic Activity and the Hazard of Sakurajima 爲栗, 健 2957 other 2015-03-23 application/pdf 想林 6 45 59 AA12479431 21850046 https://k-junshin.repo.nii.ac.jp/record/736/files/sorin_06TAMEGURI.pdf https://k-junshin.repo.nii.ac.jp/records/736 jpn