@article{oai:repository.dl.itc.u-tokyo.ac.jp:00038627, author = {Omori, F.}, journal = {Publications of the Earthquake Investigation Committee in foreign languages}, month = {Mar}, note = {application/pdf}, pages = {1--94}, title = {ANNUAL AND DIURNAL VARIATIONS OF SEISMIC FREQUENCY IN JAPAN}, volume = {8}, year = {1902} }