共 20 条
[1]
ALSTON JM, 1994, SCI SCARCITY PRINCIP
[2]
Anderson J.R., 1988, SCI FOOD CGIAR ITS P
[3]
Antle J. M., 1991, Northeastern Journal of Agricultural and Resource Economics, V20, P68
[6]
DOUTHITT RA, 1991, RECOMBINANT BOVINE G
[7]
Freeman A. M., 1993, MEASUREMENT ENV RESO
[9]
HALLBERG M, 1992, BOVINE SOMATOTROPIN
[10]
Heal G., 1991, Commodity and resource policies in agricultural systems., P196