搜索结果: 1-1 共查到“美国经济 GOVERNMENT POLICY”相关记录1条 . 查询时间(0.093 秒)
HOG ROUND MARKETING, SEED QUALITY, AND GOVERNMENT POLICY: INSTITUTIONAL CHANGE INU.S. COTTON PRODUCTION, 1920-60
HOG ROUND MARKETING SEED QUALITY GOVERNMENT POLICY INSTITUTIONAL CHANGE U.S. COTTON PRODUCTION
font style='font-size:12px;'>
2014/6/25
Between 1928 and 1960 U.S. cotton production witnessed a revolution with average yields increasing roughly threefold. In addition, the average staple length of the U.S. crop increased significantly, r...