Columbia subject headings:
Harvard subject headings:
Railroads and state--Germany.
Railroads--Germany (East)--Traffic--History.
Railroads--Germany (West)--Traffic--History.
Railroads--Germany--Traffic--History.
World War, 1939-1945--Transportation--Germany.
Princeton subject headings:
Railroads and state--Germany.
Railroads--Germany (East)--Traffic--History.
Railroads--Germany (West)--Traffic--History.
Railroads--Germany--Traffic--History--20th century.
World War, 1939-1945--Transportation--Germany.