Environmental policy -- Economic aspects 2 Economic aspects -- 2 Environmental aspects 2 International trade -- 2 Politics and government -- 2 Citizen participation -- 1 more ... Congresses -- 1 Envcironmental policy -- 1 Evaluation -- 1 Game theory 1 Government policy -- 1 Green movement -- 1 History -- 1 Management -- 1 Politics and government 1 Pollution -- 1 Renewable natural resources -- 1 less ...