Columbia subject headings:
Mesolcina Valley (Switzerland)--Description and travel.
Mesolcina Valley (Switzerland)--Pictorial works.
Ticino (Switzerland)--Description and travel.
Ticino (Switzerland)--Pictorial works.
Harvard subject headings:
Mesolcina Valley (Switzerland)--Description and travel.
Mesolcina Valley (Switzerland)--Pictorial works.
Ticino (Switzerland)--Description and travel.
Ticino (Switzerland)--Pictorial works.
Princeton subject headings: