Columbia subject headings:
Art and science--Europe--History--19th century--Congresses.
Impressionism (Art)--Europe--History and criticism--Congresses.
Light in art--Congresses.
Wave theory of light--Congresses.
Harvard subject headings:
Art and science--History--19th century--Congresses.
Fresnel, Augustin Jean, 1788-1827--Congresses.
Impressionism (Art)--Congresses.
Light in art--Congresses.
Princeton subject headings:
Art and science--History--19th century--Congresses.
Fresnel, Augustin Jean, 1788-1827--Congresses.
Impressionism (Art)--Congresses.
Light in art--Congresses.