- Organisation for Economic Co-operation and Development countries (10)
- Power resources--Statistics (3)
- Banks and banking--Accounting (2)
- Banks and banking--Accounting--Statistics (2)
- Organisation for Economic Co-operation and Development (2)
- エネルギー--統計 (2)
- 経済--経済政策.国際経済 (2)
- Education--Evaluation--Statistics--Cross-cultural studies (1)
- Educational indicators--Cross-cultural studies (1)
- Electric power--Conservation--Congresses (1)
- Electric utilities--Management--Congresses (1)
- Energy industries--Statistics--Periodical (1)
- Gross national products (1)
- National income--Accounting--Statistics (1)
- Purchasing power parity (1)
- Revenue (1)
- Telecommunication equipment indusstry--Periodicals (1)
- Telecommunication policy--Periodicals (1)
- Telecommunication--Statistics--Periodicals (1)
- 経済 (1)