共 50 条
- [25] IS THE UNITED-STATES LOSING TECHNOLOGICAL INFLUENCE IN THE DEVELOPING-COUNTRIES ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1988, 500 : 33 - 50
- [27] ARE UNITED-STATES CROPS LOSING THEIR PRODUCTION COST-ADVANTAGE OHIO REPORT ON RESEARCH AND DEVELOPMENT, 1985, 70 (04): : 51 - 52