@article{oai:repository.dl.itc.u-tokyo.ac.jp:00000257,
 author = {EWING, J. A.},
 issue = {1},
 journal = {Transactions of the Seismological Society of Japan},
 month = {},
 note = {application/pdf},
 pages = {38--43},
 title = {A NEW FORM OF PENDULUM SEISMOGRAPH},
 volume = {1},
 year = {1880}
}