Input-output tables Economic conditions 20 Mathematical models 14 Industries 9 National income 5 Statistics 4 Accounting 3 Commerce 3 Economic forecasting 3 Prices 3 Economic aspects 2 Employment forecasting 2 Input-output analysis 2 Labor supply 2 Regional economics 2 Technological innovations 2 Air 1 Computer programs 1 Congresses 1 Econometric models 1 Effect of technological innovations on 1 Fiscal policy 1 GRIMP (Computer program) 1 Gross national product 1 Heckscher-Ohlin principle 1 Information services 1 Methodology 1 Pollution 1 Production functions (Economic theory) 1 Regional disparities 1