Petroleum industry and trade Industrie et commerce 577 Pétrole 484 General 300 BUSINESS & ECONOMICS 265 History 180 Industries 179 Political aspects 156 Aspect politique 118 Government policy 118 POLITICAL SCIENCE 110 Histoire 108 Environmental aspects 96 Politique gouvernementale 95 Energy policy 93 Politics and government 86 TECHNOLOGY & ENGINEERING 86 Industrie 76 Gas industry 73 Petroleum 72 Social aspects 67 Politique énergétique 64 Politique et gouvernement 61 Economic conditions 58 HISTORY 56 Gaz 55 Petrole 55 Economic history 54 Economic aspects 51 Foreign relations 47