Columbia subject headings:
Birth control--History.
Contraception--Research--History.
Gamble, Clarence James, 1894-1966.
Medical scientists--Massachusetts--Biography.
Harvard subject headings:
Birth control--History.
Contraception--Research--History.
Gamble, Clarence James, 1894-1966.
Medical scientists--Massachusetts--Biography.
Princeton subject headings:
Birth control--History.
Contraception--Research--History.
Gamble, Clarence James, 1894-
Medical scientists--Massachusetts--Biography.