@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033135, author = {笠原, 順三 and 是沢, 定之 and 南雲, 昭三郎 and 下鶴, 大輔}, issue = {3}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Dec}, note = {application/pdf}, pages = {721--740}, title = {1978年伊豆大島近海地震の前震活動と大島付近の異常構造}, volume = {53}, year = {1978} }