REMOVE

1. Geologic Atlas
2. Atlas Map
3. Alaska
4. Risch, M.

WHAT

1. Geology (1)
2. Physical (1)

WHERE

1. Greenland (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)

WHEN

1. 1892 (1)