@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033433,
 author = {Hagiwara, Takahiro and Iwata, Takayuki},
 issue = {3},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {Jul},
 note = {application/pdf},
 pages = {485--515},
 title = {23. Summary of the Seismographic Observation of Matsushiro Swarm Earthquakes},
 volume = {46},
 year = {1968}
}