Columbia subject headings:
Arts, Belgian.
Avant-garde (Aesthetics)--Belgium--History--19th century.
XX (Group of artists)
Harvard subject headings:
Arts, Belgian.
Avant-garde (Aesthetics)--Belgium--History--19th century.
XX (Artistic group)
XX (Group of artists)
Princeton subject headings:
Arts, Belgian.
Avant-garde (Aesthetics)--Belgium--History--19th century.
XX (Artistic group)