Columbia subject headings:
Friendship in literature.
German literature--19th century--History and criticism.
German literature--20th century--History and criticism.
Harvard subject headings:
Conference papers and proceedings
Friendship in literature--Congresses.
German literature--19th century--History and criticism--Congresses
German literature--20th century--History and criticism--Congresses
Literary criticism
Princeton subject headings:
Friendship in literature--Congresses.
German literature--19th century--History and criticism--Congresses.
German literature--20th century--History and criticism--Congresses.