Columbia subject headings:
Architecture, Domestic--Germany--Erfurt--History.
City planning--Germany--Erfurt--History.
Erfurt (Germany)--Buildings, structures, etc.
Harvard subject headings:
Architecture, Domestic--Germany--Erfurt.
Cities and towns--Germany--Erfurt.
City planning--Germany--Erfurt.
Princeton subject headings:
Architecture, Domestic--Germany--Erfurt--History.
City planning--Germany--Erfurt--History.
Erfurt (Germany)--Buildings, structures, etc.