Columbia subject headings:
Authors, German--19th century--Biography--Congresses.
Freytag, Gustav, 1816-1895--Congresses.
Freytag, Gustav, 1816-1895--Criticism and interpretation--Congresses.
Freytag, Gustav, 1816-1895--Political and social views--Congresses.
Poland--In literature--Congresses.
Polish people in literature--Congresses.
Propaganda, Anti-Polish--Germany--History--19th century--Congresses.
Harvard subject headings:
Authors, German--19th century--Biography--Congresses.
Freytag, Gustav, 1816-1895--Appreciation--Congresses.
Freytag, Gustav, 1816-1895--Criticism and interpretation--Congresses.
German literature--19th century--History and criticism--Congresses
Poland--In literature--Congresses.
Princeton subject headings:
Authors, German--19th century--Biography--Congresses.
Freytag, Gustav, 1816-1895--Congresses.
Freytag, Gustav, 1816-1895--Criticism and interpretation--Congresses.
Freytag, Gustav, 1816-1895--Political and social views--Congresses.
Poland--In literature--Congresses.
Polish people in literature--Congresses.
Propaganda, Anti-Polish--Germany--History--19th century--Congresses.