Columbia subject headings:
Architecture--Germany--History--20th century.
Kaufmann, Oskar, 1873-1956.
Harvard subject headings:
Architects--Germany
Architecture--Germany--History--20th century
Architecture--Germany--History--20th century.
Kaufmann, Oskar, 1873-1956
Princeton subject headings:
Architecture, Modern--20th century--Germany.
Kaufmann, Oskar, 1873-