REMOVE

1. Historical
2. Physical
3. National Atlas
4. 1978

WHAT

1. Atlas Map (4)
2. Glaciers (4)

WHERE

1. Switzerland (4)
2. Säntis (Switzerland) (2)
3. Valais Alps (Switzerland) (2)
4. Bernese Alps (Switzerland … (1)
5. Valais Region (Switzerlan … (1)

WHO

1. Eidgenössische Landestopo … (4)
2. Imhof, Eduard, 1895-1986 (4)
3. Verlag der Eidgenössisch … (4)
4. Gutersohn, Heinrich, 1899 … (2)
5. Kasser, Peter (1)

WHEN

1. 1968 (2)
2. 1965 (1)
3. 1973 (1)