Columbia subject headings:
Art, Modern--20th century.
Art--Philosophy.
Artists--Germany (West)--Interviews.
Walther, Franz Erhard--Aesthetics.
Walther, Franz Erhard--Interviews.
Harvard subject headings:
Art, Modern--20th century
Art--Philosophy
Artists--Germany (West)--Interviews.
Walther, Franz Erhard--Aesthetics.
Walther, Franz Erhard--Interviews.
Princeton subject headings: