Columbia subject headings:
Architecture--Germany--History--21st century.
Interior architecture--Germany--History--21st century.
Nieberg, Axel, 1968-
Harvard subject headings:
Architecture--Germany--History--21st century.
Interior architecture--Germany--History--21st century.
Nieberg, Axel, 1968-
Princeton subject headings:
Architecture--Germany--History--21st century.
Interior architecture--Germany--History--21st century.
Nieberg, Axel, 1968-