Columbia subject headings:
German literature--19th century--History and criticism.
German literature--20th century--History and criticism.
Metaphor in literature.
Metaphor--History--19th century.
Metaphor.
Poetics--History--19th century.
Harvard subject headings:
Literature and science--History--19th century.
Metaphor in literature.
Metaphor--History--19th century.
Modernism (Literature)
Poetics--History--19th century
Poetry, Modern--19th century--History and criticism
Princeton subject headings:
German literature--19th century--History and criticism.
German literature--20th century--History and criticism.
Metaphor in literature.
Metaphor.