Columbia subject headings:
Birth control--Asia.
Birth control--United States.
Contraception--Asia.
Contraception--United States.
Harvard subject headings:
Birth control--Asia.
Birth control--United States.
Contraception--Asia.
Contraception--United States.
Princeton subject headings:
Birth control--Asia.
Birth control--United States.
Contraception--Asia.
Contraception--United States.