Topics
Bus travel
1
Business enterprises
3
Dams
3
Economic aspects
11
Economic conditions
Economic forecasting
3
Economic history
1
Economic surveys
3
Forecasting
3
Household surveys
3
Housing
1
Hydroelectric power plants
7
Mathematical models
2
Municipal services
1
Planning
2
Population forecasting
3
Regional economics
1
Social aspects
4
Social conditions
4
Social surveys
1
Sociological aspects
2
Telephone surveys
1
Transportation
1