@article{oai:nied-repo.bosai.go.jp:00000064,
 author = {Kazuo HAMADA},
 journal = {国立防災科学技術センター 研究報告},
 month = {Aug},
 pages = {53--70},
 title = {P-traveltime Anomalies and Upper Mantle StructuresBeneath Japan-Review of Japanese SeismologicalInvestigations-},
 volume = {12},
 year = {1975}
}