Columbia subject headings:
Architecture--Germany (East)--Guidebooks.
Architecture--Germany--Berlin--Guidebooks.
Harvard subject headings:
Architecture--Germany (East)--Guidebooks.
Architecture--Germany--Berlin
Architecture--Germany--Berlin--Guidebooks
Berlin (Germany)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Germany (East)--Guidebooks.
Architecture--Germany--Berlin--Guidebooks.