| 開析された谷地形の発達するベルタルベ火山のスケッチ。 | |||
| Gorshkov, G.S. (1958) Catalogue of the active volcanoes of the world including solfatara fields, Part VII, Kurile Islands. International Association of Volcanology, Rome. Fig.7 | |||
| View of Berutarube Volcano with well-developed dissected valley. |
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