Columbia subject headings:
Architecture--Germany (West)--History--20th century.
Ruf, Sep, 1908-1982--Criticism and interpretation.
Harvard subject headings:
Architecture, Modern--20th century--Germany (West)
Architecture--Germany (West)--History.
Ruf, Sep, 1908-1982--Criticism and interpretation.
Princeton subject headings:
Architecture, Modern--20th century--Germany (West).
Ruf, Sep, 1908-1982--Criticism and interpretation.