Columbia subject headings:
Harvard subject headings:
Korea--History--Koryŏ period, 935-1392.
Korea--History--To 935.
Land tenure--Korea--History
Village communities--Korea--History.
Princeton subject headings:
Korea--History--Koryŏ period, 935-1392.
Korea--History--To 935.
Land tenure--Korea--History.
Village communities--Korea--History.