REMOVE

1. Data Visualization
2. Agriculture
3. Switzerland
4. Grosjean, Georges

WHAT

1. Architecture (2)
2. Atlas Map (2)
3. National Atlas (2)

WHO

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

WHEN

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