Columbia subject headings:
Espionage, German--Middle East--History--20th century.
Germany--Foreign relations--Middle East.
Middle East--Foreign relations--Germany.
Prüfer, Curt Max, 1881-1959.
World War, 1914-1918--Diplomatic history.
World War, 1914-1918--Middle East.
World War, 1914-1918--Personal narratives, German.
World War, 1914-1918--Secret service--Germany.
Harvard subject headings:
Espionage, German--Middle East--History--20th century.
Germany--Foreign relations--Middle East.
Middle East--Foreign relations--Germany.
Prüfer, Curt Max, 1881-1959
World War, 1914-1918--Diplomatic history
World War, 1914-1918--Middle East.
World War, 1914-1918--Personal narratives, German
World War, 1914-1918--Secret service--Germany
Princeton subject headings:
Espionage, German--Middle East--History--20th century.
Germany--Foreign relations--Middle East.
Middle East--Foreign relations--Germany.
Prüfer, Curt Max, 1881-1959.
World War, 1914-1918--Diplomatic history.
World War, 1914-1918--Middle East.
World War, 1914-1918--Personal narratives, German.
World War, 1914-1918--Secret service--Germany.