@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033943,
 author = {Yokoyama, Izumi},
 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 = {567--572},
 title = {Geomagnetic Studies of Volcano Mihara.The 8th Paper : Continuous Observation of Changes in Geomagnetic Declination during the Period 1955～56)},
 volume = {35},
 year = {1957}
}