Columbia subject headings:
Korea--History--Japanese occupation, 1910-1945.
Rice trade--Korea--History--20th century.
Rice--Japan--History--20th century.
Rice--Korea--History--20th century.
Harvard subject headings:
Korea--History--Japanese occupation, 1910-1945.
Rice trade--Korea--History.
Rice--Japan--History
Rice--Korea--History.
Princeton subject headings:
Korea--History--Japanese occupation, 1910-1945.
Rice trade--Korea--History.
Rice--Japan--History.
Rice--Korea--History.