@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034957, author = {今村, 明恒}, issue = {1}, journal = {東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University}, month = {May}, note = {application/pdf}, pages = {36--49}, title = {北伊豆大地震の計測學的研究}, volume = {9}, year = {1931} }