Columbia subject headings:
Architecture--Germany--Hamburg--History--20th century--Guidebooks.
Architecture--Germany--Hamburg--History--21st century--Guidebooks.
Hamburg (Germany)--Buildings, structures, etc.--Guidebooks.
Hamburg (Germany)--Guidebooks.
Harvard subject headings:
Architecture--Germany--Hamburg--20th century--Guidebooks.
Architecture--Germany--Hamburg--21st century--Guidebooks.
Architecture--Germany--Hamburg--History--Guidebooks.
Hamburg (Germany)--Buildings, structures, etc.--Guidebooks.
Hamburg (Germany)--Guidebooks.
Princeton subject headings: