Columbia subject headings:
Harvard subject headings:
Sex discrimination against women--Japan--Hokkaido.
Women--Japan--Hokkaido.
Princeton subject headings:
Sex discrimination against women--Japan--Hokkaido--History--20th century.
Sex discrimination against women--Japan--Hokkaido--History--21st century.
Women--Japan--Hokkaido--Social conditions--20th century.
Women--Japan--Hokkaido--Social conditions--21st century.