Columbia subject headings:
Pujol, Juan.
Spies--Great Britain--Biography.
Spies--Spain--Biography.
World War, 1939-1945--Secret service--Germany--Biography.
World War, 1939-1945--Secret service--Great Britain--Biography.
Harvard subject headings:
Pujol, Juan.
Spies--Great Britain--Biography.
Spies--Spain--Biography.
World War, 1939-1945--Secret service--Germany--Biography.
World War, 1939-1945--Secret service--Great Britain--Biography.
Princeton subject headings:
Pujol, Juan.
Spies--Great Britain--Biography.
Spies--Spain--Biography.
World War, 1939-1945--Secret service--Germany--Biography.
World War, 1939-1945--Secret service--Great Britain--Biography.