Industrie et commerce Petroleum industry and trade 577 BUSINESS & ECONOMICS 510 Pétrole 481 General 450 Industries 334 History 313 Histoire 300 TECHNOLOGY & ENGINEERING 250 Automobile industry and trade 240 Automobiles 240 Textiles et tissus 235 Textile industry 232 Aliments 210 Food industry and trade 209 POLITICAL SCIENCE 175 Industrie 151 Politique gouvernementale 131 Government policy 130 Aspect politique 121 Political aspects 121 HISTORY 104 Environmental aspects 95 Economic conditions 88 Economic history 85 SOCIAL SCIENCE 80 Food 79 Politics and government 79 Aspect de l'environnement 76 Food Industry 75