@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033267, author = {Ishida, Mizuho}, issue = {6}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Jan}, note = {application/pdf}, pages = {1023--1051}, title = {55. Seismicity and Travel-Time Anomaly in and around Japan}, volume = {48}, year = {1971} }