Columbia subject headings:
Middle class women--History--Congresses.
Middle class--History--Congresses.
Harvard subject headings:
Europe--Social conditions--Congresses.
Interpersonal relations--History--19th century--Congresses.
Middle class women--Europe--History--19th century--Congresses.
Middle class--Europe--History--19th century--Congresses.
Sex role--Europe--History--19th century--Congresses.
Princeton subject headings:
Europe--Social conditions--Congresses.
Interpersonal relations--History--19th century--Congresses.
Middle class women--Europe--History--19th century--Congresses.
Middle class--Europe--History--19th century--Congresses.
Sex role--Europe--History--19th century--Congresses.