共 55 条
- [21] FEDER G, 1997, UNPUB BENEFITS LAND
- [22] Feder G., 1988, LAND POLICIES FARM P
- [23] Firmin-Sellers Kathryn., 1996, TRANSFORMATION PROPE
- [26] GIRI J, 1983, SAHEL DEMAIN
- [27] GREEN JK, 1987, 129 LTC U WISC
- [28] Gujarati D. N., 1995, Basic Econometrics, V3rd ed
- [29] HARRISON P, 1992, CHALLENGES OF AGRICULTURAL PRODUCTION AND FOOD SECURITY IN AFRICA, P129