Columbia subject headings:
Harvard subject headings:
Forced labor--Soviet Union--Biography.
Internment camps--Soviet Union--History
Labor camps--Soviet Union--History.
Political prisoners--Soviet Union--Biography
Ruge, Wolfgang
Soviet Union--History--1925-1953.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Princeton subject headings:
Historians--Germany (East)--Biography.
Historians--Soviet Union--Biography.
Ruge, Wolfgang.