Studies Analysis 1,380 Economic models 1,029 Economic theory 840 Energy policy 674 Economic growth 588 Equilibrium 440 Economic development 417 Economic crisis 414 International trade 410 Economic aspects 374 Politics 367 Productivity 339 Regression analysis 320 Energy economics 316 Energy consumption 310 Political economy 308 Impact analysis 306 Environment 305 Developing countries--LDCs 304 Econometrics 296 Securities markets 295 Atmospheric Protection/Air Quality Control/Air Pollution 294 Climate Change/Climate Change Impacts 294 Environment, general 294 Hydrogeology 294 Soil Science & Conservation 294 Water Quality/Water Pollution 294 Macroeconomics 291 Energy efficiency 288