Columbia subject headings:
Architecture--Germany--History--20th century.
Zinsmeister + Scheffler.
Harvard subject headings:
Architectural firms--Germany.
Architecture, Modern--20th century--Germany--Designs and plans.
Zinsmeister + Scheffler.
Princeton subject headings:
Architectural firms--Germany.
Architecture, Modern--20th century--Germany--Designs and plans.
Zinsmeister + Scheffler.