Columbia subject headings:
Beuys, Joseph--Aesthetics.
Beuys, Joseph--Interviews.
Beuys, Joseph--Political and social views.
Harvard subject headings:
Beuys, Joseph--Aesthetics.
Beuys, Joseph--Interviews.
Beuys, Joseph--Political and social views.
Princeton subject headings:
Beuys, Joseph--Aesthetics.
Beuys, Joseph--Interviews.
Beuys, Joseph--Political and social views.