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Assessing the eco-efficiency of a circular economy system in China's coal mining areas: Emergy and data envelopment analysis

EconomicsClean Coal TechnologyResource EfficiencyEngineeringEnergy EfficiencyCircular Economy SystemEco-efficiencyEnergy PolicyAgricultural EconomicsBusinessLife Cycle AssessmentEnvironmental EconomicsCoal Mining AreasData Envelopment AnalysisEmergy Analysis