Columbia subject headings:
German philology--History--18th century.
German philology--History--19th century.
German poetry--18th century--History and criticism.
German poetry--19th century--History and criticism.
Harvard subject headings:
German philology--History--18th century.
German philology--History--19th century.
German poetry--18th century--History and criticism
German poetry--19th century--History and criticism
Princeton subject headings:
German philology--History--18th century.
German philology--History--19th century.
German poetry--18th century--History and criticism.
German poetry--19th century--History and criticism.