Columbia subject headings:
Celan, Paul--Criticism and interpretation.
Eich, Günter, 1907-1972--Criticism and interpretation.
German poetry--20th century--History and criticism.
Kaschnitz, Marie Luise, 1901-1974--Criticism and interpretation.
Sachs, Nelly--Criticism and interpretation.
Harvard subject headings:
German poetry--20th century--History and criticism
Mutism in literature.
Princeton subject headings: