Columbia subject headings:
Maternal health services--Great Britain--History--20th century.
Obstetrics--Great Britain--History--20th century.
Harvard subject headings:
Maternal health services--Great Britain--History--20th century.
Obstetrics--Great Britain--History--20th century.
Princeton subject headings:
Maternal health services--Great Britain--History--20th century.
Obstetrics--Great Britain--History--20th century.