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| Series | Gravity Map Series (Bouguer Anomalies) | 
| No. | 27 | 
| Map Name | Gravity Map of Okayama District | 
| Scale | 1:200,000 | 
| Author | Yasuaki MURATA, Masao KOMAZAWA, Masahiko MAKINO, Hideyuki SATOH, Kazunari NAWA, Masato JOSHIMA, Kiyoyuki KISIMOTO, Shigeo OKUMA, Ryuichi SHICHI, Hiroaki KOMURO, Keiichi NISHIMURA and Junpei AKAMATSU | 
| Publish Year | 2009 | 
| Publisher | Geological Survey of Japan, AIST | 
| Price | ¥2,750 ( Purchase Guide ) | 
| Remarks | Two-sided printing |