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| Series | Quadrangle Series 1:50,000 |
| No. | 07［NIIGATA］-101 |
| Map Name | ASHIO |
| Explanatory | Explanatory Text of the Geological Map of Japan, Ashio |
| Author | Kiyoo KAWADA, Atsushi OZAWA |
| Publish Year | 1954 / Explanatory Note：1955 |
| Publisher | Geological Survey of Japan |
| Price | out of stock |
| Prefecture | GUNMA, TOCHIGI |
| Size | @790mm×@550mm |
| Download | Geological Map (Raster, GeoTIFF, KML, Vector data), Explanatory (PDF format) To this page |