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Technological change and manpower trends in five industries : pulp and paper, hydraulic cement, steel, aircraft and missiles, wholesale trade
- "Technological change and manpower trends in five industries : pulp and paper, hydraulic cement steel, aircraft and missiles wholesale trade"
- "Technological change and manpower trends in five industries : pulp and paper, hydraulic cement, steel, aircraft and missiles, wholesale trade"@en
- "Technological change and manpower trends in five industries : pulp and paper, hydraulic cement, steel, aircraft and missiles, wholesale trade"