论文部分内容阅读
Productivity growth,technical efficiency change in Chinese soybean production
【机 构】
:
College of Economics and management,China Agricultural University,100193,Beijing China
【出 处】
:
第八届世界大豆研究大会暨第九届全国大豆学术讨论会
【发表日期】
:
2009年12期
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