Columbia subject headings:
Harvard subject headings:
Argentina--History--1910-1943.
Argentina--History--1943-1955.
Germans--Patagonia (Argentina and Chile)--Politics and government.
Nazis--Argentina--History.
Submarines (Ships)--Germany
Princeton subject headings:
Espionage--Germany--History.
Germans--Patagonia (Argentina and Chile).
Nazis--Argentina--History--20th century.
War criminals--Argentina--History--20th century.
World War, 1939-1945--Naval operations, German.
World War, 1939-1945--Naval operations--Submarine.