- 世界経済 (2)
- Economic development (1)
- International cooperation (1)
- Soviet Union--Economic conditions--1985- (1)
- Soviet Union--Economic policy--1986- (1)
- Transportation--Cost effectiveness (1)
- Transportation--Cost effectiveness--Case studies (1)
- Underdeveloped areas (1)
- 国際復興開発銀行 (1)
- 後進国開発 (1)
- 経済--統計 (1)
- 貿易品 (1)
- 農産物価格 (1)