Columbia subject headings:
Continuity in literature--Congresses.
Cycles in literature--Congresses.
German poetry--20th century--History and criticism--Congresses.
Harvard subject headings:
Continuity in literature--Congresses.
Cycles in literature--Congresses.
German poetry--20th century--History and criticism--Congresses.
Princeton subject headings:
Continuity in literature--Congresses.
Cycles in literature--Congresses.
German poetry--20th century--History and criticism--Congresses.