@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033359, author = {Tsujiura, Masaru}, issue = {4}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Sep}, note = {application/pdf}, pages = {613--633}, title = {27. Regional Variation of P Wave Spectrum (1)}, volume = {47}, year = {1969} }