Columbia subject headings:
Espionage, Soviet--Japan--History--20th century.
Sorge, Richard, 1895-1944.
Spies--Japan--Biography.
Spies--Soviet Union--Biography.
Harvard subject headings:
Espionage, Soviet--Japan--History--20th century.
Espionage, Soviet--Japan--History.
Sorge, Richard, 1895-1944
Spies--Japan--Biography.
Spies--Soviet Union--Biography.
Princeton subject headings:
Espionage, Soviet--Japan--History--20th century.
Sorge, Richard, 1895-1944.
Spies--Japan--Biography.
Spies--Soviet Union--Biography.