Columbia subject headings:
Cities and towns in literature.
German poetry--19th century--History and criticism.
German poetry--20th century--History and criticism.
Poverty in literature.
Harvard subject headings:
Cities and towns in literature
City and town life in literature
German poetry--19th century--History and criticism
German poetry--20th century--History and criticism
Social problems in literature.
Princeton subject headings:
Cities and towns in literature.
German poetry--19th century--History and criticism.
German poetry--20th century--History and criticism.
Poverty in literature.