REMOVE

1. Physical
2. Geologic Atlas
3. Atlas Map
4. Greenland

WHAT

1. Geology (1)

WHERE

1. Alaska (1)
2. Switzerland (1)
3. Washington (1)
4. World (1)

WHO

1. Berghaus, Hermann (1)
2. Hess, O. (1)
3. Justus Perthes (1)
4. Kogel, F. (1)
5. Risch, M. (1)

WHEN

1. 1892 (1)