Petroleum (2) Business (2) monde (1) puits (1) guerre (1) papier (1) travail (1) industrie (1) protection sociale (1) entreprise (1) Employment (1) Assaying (1) Communication (1) Labor (1) Employees (1) World War, 1939-1945 (1) World War, 1914-1918 (1) Will (1) White collar workers (1) War (1) Stock companies (1) Partnership (1) Paper (1) Oils and fats (1) Working class (1) Industries (1) Human comfort (1) Depressions (1) Corporations (1) Business enterprises (1)