Columbia subject headings:
Ethics in literature.
German literature--20th century--History and criticism.
German literature--21st century--History and criticism.
Harvard subject headings:
Ethics in literature.
German literature--20th century--History and criticism
German literature--21st century--History and criticism
Princeton subject headings:
Ethics in literature--Congresses.
German literature--20th century--History and criticism--Congresses.
German literature--21st century--History and criticism--Congresses.