共 50 条
- [2] ENERGY SUBSTITUTION IN AGRICULTURE IN THE UNITED-STATES [J]. APPLIED ENERGY, 1988, 31 (03) : 221 - 237
- [3] PRODUCTIVITY AND STRUCTURE IN UNITED-STATES AGRICULTURE [J]. AGRICULTURAL ECONOMICS RESEARCH, 1985, 37 (03): : 1 - 11
- [4] REVOLUTIONARY CHANGE IN THE STRUCTURE OF UNITED-STATES AGRICULTURE [J]. ECONOMIC PLANNING, 1981, 17 (06): : 6 - 10
- [7] FUTURE OF UNITED-STATES BEEKEEPING AND UNITED-STATES AGRICULTURE [J]. AMERICAN BEE JOURNAL, 1986, 126 (04): : 273 - 275