Tourist trade Tourism 29 Planning 17 Statistics 12 Congresses 10 Marketing 10 Economic aspects 8 Environmental aspects 5 Government policy 5 City planning 4 Economic conditions 4 Public opinion 4 Regional planning 4 Bibliography 3 Description and travel 3 Hospitality industry 3 Management 3 Visitors, Foreign 3 Central business districts 2 Econometric models 2 Ecotourism 2 Employees 2 Food service 2 Forecasting 2 History 2 Hotel management 2 Law and legislation 2 Periodicals 2 Recreation 2 Recreational use 2