Columbia subject headings:
Harvard subject headings:
English literature--20th century--History and criticism--Congresses
German literature--20th century--History and criticism--Congresses
World War, 1914-1918--Literature and the war--Congresses.
Princeton subject headings:
English literature--20th century--History and criticism--Congresses.
German literature--20th century--History and criticism--Congresses.
World War, 1914-1918--Literature and the war--Congresses..