Columbia subject headings:
Architecture--Ticino River Valley (Switzerland and Italy)--Guidebooks.
Architecture--Ticino River Valley (Switzerland and Italy)--History--20th century--Guidebooks.
Harvard subject headings:
Architecture, Modern--20th century--Ticino River Valley (Switzerland and Italy)--Guidebooks.
Architecture--Ticino River Valley (Switzerland and Italy)--Guidebooks.
Architecture--Ticino River Valley (Switzerland and Italy)--History--20th century--Guidebooks.
Ticino River Valley (Switzerland and Italy)
Princeton subject headings:
Architecture, Modern--20th century--Ticino River Valley (Switzerland and Italy)--Guidebooks.
Architecture--Ticino River Valley (Switzerland and Italy)--Guidebooks.