@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034284,
 author = {Nasu, Nobuji},
 issue = {1-4},
 journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo},
 month = {Mar},
 note = {application/pdf},
 pages = {57--60},
 title = {11. Strong Motion Vibrograph},
 volume = {25},
 year = {1949}
}