共 13 条
- [1] *AGR, 1997, STAT AGR AGR, V18
- [3] Combris P, 1997, PROD ANIM, V10, P267
- [4] FABIAN R, 1994, VALUING HLTH POLICY, P278
- [5] Hanneman WM, 1984, AM J AGR ECON, V66, P332
- [7] Ott S. L., 1990, Agribusiness (New York), V6, P593, DOI 10.1002/1520-6297(199011)6:6<
- [8] 593::AID-AGR2720060606>
- [9] 3.0.CO
- [10] 2-Z