Columbia subject headings:
Harvard subject headings:
Architecture--Germany--Düsseldorf--Guidebooks.
Art--Germany--Düsseldorf--Guidebooks.
Düsseldorf (Germany)--Guidebooks.
Princeton subject headings:
Architecture--Germany--Düsseldorf--Guidebooks.
Art--Germany--Düsseldorf--Guidebooks.
Düsseldorf (Germany)--Guidebooks.
Guidebooks.