Columbia subject headings:
Harvard subject headings:
Industrial hygiene--Japan--History--20th century.
Maternal and infant welfare--Law and legislation--Japan--History--20th century.
Women--Employment--Japan--History--20th century.
Working mothers--Japan--History--20th century.
Princeton subject headings:
Industrial hygiene--Japan--History--20th century.
Maternal and infant welfare--Law and legislation--Japan--History--20th century.
Women--Employment--Japan--History--20th century.
Working mothers--Japan--History--20th century.