Scientific Publications
| Bulletin of the National Science Museum Series C (Geology & Paleontology) | date of publication | |
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| Bulletin of the National Science Museum Series C (Geology & Paleontology) Volume 18 Number 1 | March 1992 | |
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| Kazumi YOKOYAMA, Tokiko TlBA, Kazuya CHIHARA: | P.1 | |
| Picrite sill in the Sado Island, Japan |  |
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| Toshimasa TANAI: | P.13 | |
| Juglandaceae from the Paleogene of Hokkaido, Japan | |
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