Columbia subject headings:
Harvard subject headings:
Akashi, Motojirō, 1864-1919.
Espionage, Soviet--Japan.
Intelligence service--History
Russo-Japanese War, 1904-1905--Military intelligence--Japan.
Sorge, Richard, 1895-1944
World War, 1939-1945--Military intelligence--Japan.
Princeton subject headings:
Akashi, Motojirō, 1864-1919.
Espionage, Soviet--Japan.
Intelligence service--History.
Russo-Japanese War, 1904-1905--Military intelligence--Japan.
Sorge, Richard, 1895-1950.
World War, 1939-1945--Military intelligence--Japan.