@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033793,
 author = {Yukutake, Takesi},
 issue = {1},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {Aug},
 note = {application/pdf},
 pages = {1--65},
 title = {The Westward Drift of the Magnetic Field of the Earth},
 volume = {40},
 year = {1962}
}