Columbia subject headings:
Internal security--Japan--History.
Japan--Politics and government--1912-1945.
Japan--Politics and government--1926-1945.
Political crimes and offenses--Japan--History.
Harvard subject headings:
Internal security--Japan--History
Japan--Politics and government--1912-1945.
Japan--Politics and government--1926-1945.
Political crimes and offenses--Japan--History.
Princeton subject headings:
Internal security--Japan--History.
Japan--Politics and government--1926-1945.
Political crimes and offenses--Japan--History.