Luftfahrtkarte ICAO 1:500 000, 2253-B Schweiz = Carte aéronautique OACI 1:500 000, 2253-B Suisse = Aeronautical chart ICAO 1:500 000, 2253-B Switzerland
Bern : Federal Office for Civil Aviation,
1988.
Relief shown by gradient tints, shading, and spot heights.
"Stand der Flugsicherungsangaben: 05 MAY 1988."