REMOVE

1. Data Visualization
2. Switzerland
3. Alps

WHAT

1. Atlas Map (1)
2. Case Map (1)
3. Mountains; Rivers (1)
4. Panorama Round (1)

WHERE

1. Austria (1)

WHO

1. Diercke, Carl (1)
2. Gaebler, Eduard (1)
3. George Westermann (1)
4. Hegi, F. (1)
5. Pfyffer von Wyher, Ludwig (1)

WHEN

1. 1820 (1)
2. 1896 (1)