Columbia subject headings:
Harvard subject headings:
Architecture, Domestic--Germany--Oldenburg--Designs and plans.
Architecture, Modern--19th century--Germany--Oldenburg--Designs and plans.
Architecture, Modern--20th century--Germany--Oldenburg--Designs and plans.
Architecture--Germany--Oldenburg--History--Designs and plans.
Buildings--Germany--Oldenburg.
City planning--Germany--Oldenburg.
Oldenburg (Germany)--Buildings, structures, etc.
Oldenburg (Germany)--History.
Princeton subject headings:
Architecture, Domestic--Germany--Oldenburg.
Architecture, Modern--20th century--Germany--Oldenburg.
City planning--Germany--Oldenburg.