Columbia subject headings:
Feminism--History--20th century--Congresses.
Feminism--Societies, etc.--History--20th century--Congresses.
Women--Europe, German-speaking--History--Congresses.
Women--History--Congresses.
Harvard subject headings:
Feminism--History--20th century--Congresses.
Feminism--Societies, etc.--History--20th century--Congresses.
Women--Europe, German-speaking--History--Congresses.
Women--History--Congresses.
Princeton subject headings:
Women--Europe--History--Congresses.