Columbia subject headings:
Harvard subject headings:
Europe, Central--Civilization.
Europe, Central--Guidebooks.
Europe, Central--History.
Vienna (Austria)--Civilization.
Vienna (Austria)--Guidebooks.
Vienna (Austria)--History.
Princeton subject headings:
Europe, Central--Civilization.
Europe, Central--Guidebooks.
Europe, Central--History.
Guidebooks.
Vienna (Austria)--Civilization.
Vienna (Austria)--Guidebooks.
Vienna (Austria)--History.