Columbia subject headings:
Arts, Modern--20th century.
Arts, Modern--21st century.
Arts, Spanish--20th century.
Arts, Spanish--21st century.
Signs and symbols.
Symbolism in art.
Harvard subject headings:
Arts, Modern--20th century
Arts, Modern--21st century
Arts, Spanish--20th century
Arts, Spanish--21st century.
Signs and symbols
Symbolism in art
Princeton subject headings:
Arts, Modern--20th century.
Arts, Modern--21st century.
Arts, Spanish--20th century.
Arts, Spanish--21st century.
Signs and symbols.
Symbolism in art.