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| Series | Miscellaneous Map Series | 
| No. | 28-1 | 
| Map Name | Sea Bottom (Geological) Sonar Mosaic -Southern Bungo Strait- | 
| Scale | 1:10,000 | 
| Author | Masafumi ARITA, Masato JOSHIMA, Yukinobu OKAMURA, Kaichi ISHIBASHI and Kazuaki WATANABE | 
| Publish Year | 1988 | 
| Publisher | Geological Survey of Japan | 
| Price | ¥660 ( Purchase Guide ) | 
| Prefecture | Oita and Ehime |