那位仁兄有：Guan Z . , A. O. Lansi nk, 2006 ,The Source of Productivity Growth in Dutch Agriculture : A Perspective from FinanceAm e rican Jou rnal of Agricultural Econom ics , 88, 644- 656.一文，清给予帮助，不甚感激
Guan Z . , A. O. Lansi nk, 2006 ,The Source of Productivity Growth in Dutch Agriculture : A Perspective from Finance American Journal of Agricultural Economics , 88, 644- 656
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