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| Series | Geological Map of Japan 1:200,000 |
| No. | NI-54-20 |
| Map Name | OTAKI |
| Author | Takashi MITSUNASHI, Yoshiro SUDA |
| Publish Year | 1980 |
| Publisher | Geological Survey of Japan |
| Price | ¥1,430 ( Purchase Guide ) |
| Prefecture | CHIBA |
| Size | 780mm×530mm |
| Download | Geological Map (Raster, GeoTIFF, KML) To this page |