Columbia subject headings:
Harvard subject headings:
Intelligence officers--Soviet Union--Biography.
Soldiers--Soviet Union--Biography
Soviet Union--History--1917-1936.
Soviet Union--History.
Sprogis, Artur Karlovich.
World War, 1939-1945--Soviet Union--Biography.
Princeton subject headings:
Intelligence officers--Soviet Union--Biography.
Soldiers--Soviet Union--Biography.
Sprog̓is, Arturs, 1904-1980.
World War, 1939-1945--Soviet Union--Biography.