Columbia subject headings:
Architecture--Germany--Bremen--Guidebooks.
Architecture--Germany--Lower Saxony--Guidebooks.
Art, German--Germany--Bremen--Guidebooks.
Art, German--Germany--Lower Saxony--Guidebooks.
Art--Germany--Bremen--Guidebooks.
Art--Germany--Lower Saxony--Guidebooks.
Harvard subject headings:
Architecture--Germany--Bremen--Guidebooks.
Architecture--Germany--Lower Saxony--Guidebooks.
Art, German--Germany--Bremen.
Art, German--Germany--Lower Saxony.
Art--Germany--Bremen.
Art--Germany--Lower Saxony.
Princeton subject headings:
Art, German--Germany--Lower Saxony.
Art,German--Germany--Bremen.
Art--Germany--Bremen.
Art--Germany--Lower Saxony.