Columbia subject headings:
Harvard subject headings:
Korea (North)--Politics and government.
Korea (South)--History--April Revolution, 1960.
Korea (South)--Politics and government--1948-1960.
Korean reunification question (1945-)
Princeton subject headings:
Korea (North)--Politics and government.
Korea (South)--History--April Revolution, 1960.
Korea (South)--Politics and government--1948-1960.
Korean reunification question (1945- )