REMOVE

1. Historical
2. National Atlas
3. Data Visualization
4. 1973

WHAT

1. Atlas Map (6)
2. Commerce; Economics (3)

WHERE

1. Switzerland (6)
2. Geneva (Switzerland) (2)
3. Bern (Switzerland) (1)
4. St. Gallen (Switzerland) (1)
5. Valais Alps (Switzerland) (1)

WHO

1. Eidgenössische Landestopo … (7)
2. Imhof, Eduard, 1895-1986 (7)
3. Verlag der Eidgenössisch … (7)
4. Grosjean, Georges (4)
5. Sigrist, Rudolf (1)

WHEN

1. 1978 (7)