Columbia subject headings:
Harvard subject headings:
Sculpture.
Princeton subject headings:
Aesthetics--20th century.
Archipenko, Alexander, 1887-1964.
Belling, Rudolf, 1886-1972.
Cubism.
Lipchitz, Jacques, 1891-1973.
Relief (Sculpture)
Sculpture and architecture.
Sculpture, Modern--20th century.
Zāle, Kārlis, 1888-1942.