Physiographic Diagrams of Mount St. Helens, Washington, Showing Changes in its Summit Crater, Summer 1981.

Physiographic Diagrams of Mount St. Helens, Washington, Showing Changes in its Summit Crater, Summer 1981.

Leighley, Terry

1988

1988

U.S. Geological Survey

• 发现
• 比较
• 3D
• 文件