REMOVE

1. Data Visualization
2. Historical
3. National Atlas
4. Sigrist, Rudolf

WHAT

1. Atlas Map (1)
2. Commerce; Economics (1)
3. Land Development (1)

WHERE

1. St. Gallen (Switzerland) (1)
2. Switzerland (1)
3. Winterthur (Switzerland) (1)

WHO

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

WHEN

1. 1973 (1)
2. 1978 (1)