Columbia subject headings:
Korea (North)--Foreign relations--Korea (South)
Korea (North)--Foreign relations--Law and legislation.
Korea (South)--Foreign relations--Korea (North)
Korea (South)--Foreign relations--Law and legislation.
Harvard subject headings:
Korea (North)--Foreign relations--Korea (South)
Korea (North)--Foreign relations--Law and legislation.
Korea (South)--Foreign relations--Korea (North)
Korea (South)--Foreign relations--Law and legislation.
Princeton subject headings: