Columbia subject headings:
Authors, German--20th century--Biography.
Hennings, Emmy.
Harvard subject headings:
Authors, German--20th century--Biography
Ball-Hennings, Emmy, 1885-1948
Ball-Hennings, Emmy, 1885-1948.
Princeton subject headings:
Ball-Hennings, Emmy, 1885-1948.
Women authors, German--20th century--Biography.