Columbia subject headings:
German poetry.
Poets, German--Biography.
Working class writings, German.
Harvard subject headings:
German poetry
German poetry--20th century--History and criticism
Poets, German--20th century--Biography
Working class authors--Germany--Biography.
Working class writings, German--20th century--History and criticism.
Princeton subject headings:
German poetry--20th century--History and criticism.
Poets, German--Biography.
Working class writings, German.