economic energy and emission reduction

Economic energy potential

economic resources

energy economic efficiency

energy-economic transformer

energy-economic-environment model

First law of resources　economic

mineral resources economic

primary energy economic ratio

relative carrying capacity of economic resources

relative carrying of economic resources

submarginal economic resources

Thermal energy economic

wild economic resources

Dept.of Economic resources

Dept. of Economic resources

alternative energy resources

available energy resources

Biomass energy resources