Columbia subject headings:
Abortion--Government policy--Cross-cultural studies.
Abortion--Government policy.
Abortion--Law and legislation--Cross-cultural studies.
Abortion--Law and legislation.
Abortion--Statistics.
Birth control--Cross-cultural studies.
Harvard subject headings:
Abortion--Government policy--Cross-cultural studies.
Abortion--Law and legislation--Cross-cultural studies.
Birth control--Cross-cultural studies.
Princeton subject headings:
Abortion--Government policy.
Abortion--Law and legislation.
Abortion--Statistics.