Columbia subject headings:
Art--Philosophy.
Form (Aesthetics)
Klee, Paul, 1879-1940--Criticism and interpretation.
Klee, Paul, 1879-1940--Notebooks, sketchbooks, etc.
Harvard subject headings:
Art--Philosophy
Form (Aesthetics)
Klee, Paul, 1879-1940.
Princeton subject headings:
Art--Philosophy.
Form (Aesthetics)
Klee, Paul, 1879-1940--Criticism and interpretation.
Klee, Paul, 1879-1940--Notebooks, sketchbooks, etc.