共 29 条
[11]
GARDNER BL, 1992, J ECON LIT, V30, P62
[12]
Gould B. W., 1990, North Central Journal of Agricultural Economics, V12, P31, DOI 10.2307/1349356
[13]
HASSEBROOK C, 1999, FORUM APPL RES P FAL
[14]
HOPPE RA, 2001, AGR INF B USDA, V768
[17]
KNIGMA D, 1987, INCOME DISPARITIES F
[18]
Larson D. K., 1974, Southern Journal of Agricultural Economics, V6, P73