Columbia subject headings:
Itten, Johannes, 1888-1967--Exhibitions.
Harvard subject headings:
Itten, Johannes, 1888-1967--Criticism and interpretation.
Itten, Johannes, 1888-1967--Exhibitions.
Princeton subject headings:
Itten, Johannes, 1888-1967--Criticism and interpretation.
Itten, Johannes, 1888-1967--Exhibitions.