Columbia subject headings:
Harvard subject headings:
Lepontine Alps (Italy and Switzerland)--Description and travel.
Mountaineering--Lepontine Alps (Italy and Switzerland)--History.
Princeton subject headings:
Lepontine Alps (Italy and Switzerland)--Description and travel.
Mountaineering--Lepontine Alps (Italy and Switzerland)--History.
Mountaineers--Lepontine Alps (Italy and Switzerland)--History.