REMOVE

1. Data Visualization
2. Historical
3. Drack, Walter

WHAT

1. National Atlas (2)
2. Atlas Map (1)
3. Ethnography; Nationality; … (1)

WHERE

1. Switzerland (1)

WHO

1. Eidgenössische Landestopo … (2)
2. Imhof, Eduard, 1895-1986 (2)
3. Rudolf, Hans (2)
4. Verlag der Eidgenössisch … (2)

WHEN

1. 1978 (2)
2. 1860 (1)
3. 1977 (1)