Columbia subject headings:
Abortion--History--To 1500.
Abortion--Moral and ethical aspects--History--To 1500.
Harvard subject headings:
Abortion--History--To 1500.
Abortion--Moral and ethical aspects--History--To 1500.
Princeton subject headings:
Abortion--History--To 1500.
Abortion--Moral and ethical aspects--History--To 1500.