共 9 条
- [1] JOHNSON, 1956, COMPARISONS FARM NON, P2
- [2] Johnson D. G., 1947, FORWARD PRICES AGR
- [3] *JOINT EC COMM, 1957, DOES ABS MON POW AGR, P42
- [4] KOFFSKY, 1957, CURRENT INCOME POSIT, P87
- [5] KOFFSKY N, 1949, NATIONAL BUREAU EC R, V11, P151
- [6] KOFFSKY N, 1949, NATIONAL BUREAU EC R, V11, P156
- [7] STOCKER FD, 1955, USDA ARS4311, P13
- [8] STOCKER FD, 1956, USDA ARS4328, P25
- [9] 1921, ATLANTIC MONTHLY, V138, P112