Columbia subject headings:
Art, Modern--20th century.
Art--Mutilation, defacement, etc.
Exposition suisse de sculpture en plein air (1980 : Biel, Bern, Switzerland)
Sculpture, Modern--20th century--Exhibitions.
Sculpture--Mutilation, defacement, etc.
Harvard subject headings:
Art, Modern--20th century--Psychological aspects.
Art, Modern--20th century--Switzerland.
Art--Mutilation, defacement, etc.
Art--Mutilation, defacement, etc.--Switzerland.
Princeton subject headings:
Art, Modern--20th century--Psychological aspects.
Art, Modern--20th century--Switzerland.
Art--Mutilation, defacement, etc.
Art--Mutilation, defacement, etc.--Switzerland.