Congresses 127 Bibliography 104 History 96 Mathematical models 90 Management 85 Research 67 Study and teaching 65 Education 61 Accounting 56 Periodicals 56 Economic conditions 54 Economic aspects 40 Finance 38 Case studies 37 Industrial relations 36 Economics 35 Politics and government 31 City planning 30 Marketing 30 Economic policy 26 Law and legislation 26 Data processing 25 Econometric models 25 Universities and colleges 25 Corporations 24 Employment 23 Evaluation 22 Industrial management 22 Prices 22 Social aspects 22