Columbia subject headings:
Historic buildings--Germany--Ulm.
Ulm (Germany)--Buildings, structures, etc.
Ulm (Germany)--History.
Harvard subject headings:
Historic buildings--Germany--Ulm.
Ulm (Germany)--Buildings, structures, etc.
Ulm (Germany)--History.
Princeton subject headings:
Historic buildings--Germany (West)--Ulm.
Ulm (Germany)--Buildings, structures, etc.
Ulm (Germany)--History.