Columbia subject headings:
Harvard subject headings:
Japan--Foreign relations--1912-1945.
Japan--History--Shōwa period, 1926-1989.
Japan--Politics and government--1912-1945.
Princeton subject headings:
Japan--Foreign relations--1912-1945.
Japan--History--Shōwa period, 1926-1989.
Japan--Politics and government--1912-1945.