Columbia subject headings:
Machine-tool industry--Soviet Union--History.
Machinists--Soviet Union--History.
World War, 1939-1945--Soviet Union.
Harvard subject headings:
Machine-tool industry--Soviet Union--History.
Machinists--Soviet Union--History.
World War, 1939-1945--Soviet Union.
Princeton subject headings:
Machine-tool industry--Soviet Union--History.
Machinists--Soviet Union--History.
World War, 1939-1945--Soviet Union.