Columbia subject headings:
Women--Employment--Germany--History--19th century--Congresses.
Women--Employment--Germany--History--20th century--Congresses.
Harvard subject headings:
Women--Employment--Germany--History--19th century--Congresses.
Women--Employment--Germany--History--20th century--Congresses.
Princeton subject headings:
Women--Employment--Germany--History--19th century.
Women--Employment--Germany--History--20th century.