Columbia subject headings:
Harvard subject headings:
Great Britain. Special Operations Executive. Section X.
Hitler, Adolf, 1889-1945--Assassination attempts.
World War, 1939-1945--Secret service.
Princeton subject headings:
Great Britain. Special Operations Executive. Section X
Hitler, Adolf, 1889-1945--Assassination attempts.
World War, 1939-1945--Secret service--Great Britain.