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Economic conditions
5
Economic history
5
Technological innovations
3
General and Others
2
Labor market
2
Population
2
Social Sciences
2
Social aspects
2
Accounting
1
Appropriations and expenditures
1
Business, Economy and Management
1
Earth Sciences
1
Economic aspects
1
Economic development
1
Economic indicators
1
Economics
1
Education
1
Education, Special Topics
1
Employment
1
Expenditures, Public
1
Finance
1
Gas industry
1
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1
Institutional investments
1
Investments, Foreign
1
National income
1
Natural gas pipelines
1
Power resources
1
Public welfare
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