@article{oai:repository.dl.itc.u-tokyo.ac.jp:00000301,
 author = {ALEXANDER, T.},
 journal = {Transactions of the Seismological Society of Japan},
 month = {},
 note = {application/pdf},
 pages = {30--31},
 title = {NOTE ON THE BALL AND CUP SEISMOGRAPH},
 volume = {6},
 year = {1883}
}