Columbia subject headings:
Abortion--Law and legislation--Canada.
Abortion--Moral and ethical aspects--Canada.
Harvard subject headings:
Abortion--Canada.
Abortion--Law and legislation--Canada.
Abortion--Moral and ethical aspects
Abortion--Moral and ethical aspects--Canada.
Abortion--Social aspects--Canada.
Princeton subject headings:
Abortion--Law and legislation--Canada.
Abortion--Moral and ethical aspects--Canada.