@article{weko_710_1, author = "Kazuo,HAMADA", title = "P-traveltime Anomalies and Upper Mantle StructuresBeneath Japan-Review of Japanese SeismologicalInvestigations-", journal = "国立防災科学技術センター 研究報告", year = "1975", volume = "12", number = "", pages = "53--70", month = "aug" }