REMOVE

1. Physical
2. Washington
3. Hess, O.
4. Justus Perthes

WHAT

1. Atlas Map (1)
2. Geologic Atlas (1)
3. Geology (1)

WHERE

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

WHO

1. Berghaus, Hermann (1)
2. Kogel, F. (1)
3. Risch, M. (1)

WHEN

1. 1892 (1)