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Dynamic Earth
- Formation and Structure of the Earth
- > マグマの発生・上昇・噴出
- Volcanic Activity and Volcanic Landform
- Ores
- Minerals
- Quartz
- Twin
- Polytype
- Igneous Rocks
- Various Ores
- Various Minerals
- Birthstones
Physical Features of Earth Surfaces
-Topographic Maps-
- "Gaihozu"