Columbia subject headings:
Authors, German--20th century--Biography--Handbooks, manuals, etc.
Celan, Paul--Criticism and interpretation.
Celan, Paul--Handbooks, manuals, etc.
Harvard subject headings:
Authors, German--20th century--Biography--Handbooks, manuals, etc.
Celan, Paul--Criticism and interpretation.
Celan, Paul--Handbooks, manuals, etc.
Princeton subject headings:
Authors, German--20th century--Biography.
Celan, Paul--Criticism and interpretation--Handbooks, manuals, etc.