Columbia subject headings:
Harvard subject headings:
Architecture--Germany--Schleswig-Holstein--20th century.
Architecture--History--Conservation and restoration--Germany--Schleswig-Holstein.
City planning--Germany--Schleswig-Holstein.
Schleswig-Holstein (Germany)--Buildings, structures, etc.--Conservation and restoration.
Princeton subject headings:
Architecture--Germany--Schleswig-Holstein--20th century--Conservation and restoration.
City planning--Germany--Schleswig-Holstein.