Columbia subject headings:
Harvard subject headings:
Arts--Censorship--Congresses.
Authors, Exiled--Biography--Congresses.
Celan, Paul
Exiles' writings--History and criticism--Congresses.
Princeton subject headings:
Arts--Censorship--Congresses.
Authors, Exiled--Biography--Congresses.
Exiles' writings--History and criticism--Congresses.