Columbia subject headings:
Harvard subject headings:
Korea (North)--Politics and government--1948-1994.
Korea (North)--Social conditions.
Korean War, 1950-1953--Influence.
Nationalism--Korea (North)--History.
Princeton subject headings:
Korea (North)--Politics and government--1948-1994.
Korea--Politics and government--1945-1948.
Korean War, 1950-1953--Influence.
Socialism--Korea (North)