Columbia subject headings:
Korea (South)--Economic conditions.
Korea (South)--History--1948-1960.
Korea (South)--History--April Revolution, 1960.
Korea (South)--Relations--United States.
United States--Relations--Korea (South)
Harvard subject headings:
Korea (South)--Economic conditions.
Korea (South)--History--1948-1960.
Korea (South)--History--April Revolution, 1960.
Korea (South)--Relations--United States.
United States--Relations--Korea (South)
Princeton subject headings: