Columbia subject headings:
Art, Modern--Themes, motives--Congresses.
Arts, Modern--History--Congresses.
Comparative literature--Themes, motives--Congresses.
German literature--Themes, motives--Congresses.
Waves in art--Congresses.
Waves in literature--Congresses.
Harvard subject headings:
Art, Modern--Themes, motives--Congresses.
Arts, Modern--History--Congresses.
German literature--Themes, motives--Congresses.
Literature--Themes, motives--Congresses.
Waves in art--Congresses.
Waves in literature--Congresses.
Princeton subject headings:
Art, Modern--Themes, motives--Congresses.
Arts, Modern--History--Congresses.
German literature--Themes, motives--Congresses.
Literature--Themes, motives--Congresses.
Waves in art--Congresses.
Waves in literature--Congresses.