共 23 条
[1]
BUIST H, 1995, 718 USDA NAT RES ENV
[2]
CANNING P, 1995, AGR HDB USDA, V705
[3]
Chiang A. C., 1992, ELEMENTS DYNAMIC OPT
[4]
DAUGHERTY A, 1991, AER643 USDA EC RES S
[5]
ESSEKS JD, 1988, J SOIL WATER CONSERV, V43, P251
[6]
Gujarati D. N., 1978, BASIC ECONOMETRICS
[7]
Heimlich R. E., 1992, Northeastern Journal of Agricultural and Resource Economics, V21, P50
[8]
JOHNSON JB, 1989, J SOIL WATER CONSERV, V44, P441
[9]
Judge G. G., 1985, The Theory and Practice of Econometrics
[10]
KALAITZANDONAKE.G, 1994, J AGR APPL EC, V26, P200