Columbia subject headings:
Emotions in literature.
German literature--19th century--History and criticism.
German literature--20th century--History and criticism.
Love in literature.
Sex in literature.
Harvard subject headings:
Emotions--Sociological aspects
Europe--Moral conditions.
Sexual ethics--Europe--History--19th century.
Princeton subject headings:
Emotions in literature.
German literature--19th century--History and criticism.
German literature--20th century--History and criticism.
Love in literature.
Sex in literature.