Petroleum industry and trade -- 22 Political aspects -- 4 Congresses -- 3 Addresses, essays, lectures 2 Asia 2 Congresses 2 Economic conditions 2 more ... Energy industries -- 2 Energy policy -- 2 Foreign relations -- 2 Gas industry -- 2 Government policy -- 2 History -- 2 Pacific Area 2 Petroleum industry and trade 2 World politics -- 2 Address, essays -- 1 Addresses, essays, lectures -- 1 China 1 Congresses. -- 1 Decision making. -- 1 Dependency on foreign countries 1 Diversification in industry -- 1 Economic conditions -- 1 Economic integration 1 Economic policy -- 1 Embargo 1 Energy policy 1 Environmental aspects 1 Environmental aspects -- 1 less ...