共 8 条
[1]
BERINGER C, 1955, P C RESOURCE PRODUCT, P28
[2]
BRONNFENBRENNER M, 1944, ECONOMETRICA, V12
[3]
DOUGLAS PH, 1928, AM EC REV, V18
[4]
FIENUP D, 1952, 66 MONT STAT COLL AG
[5]
FRENCH B, 1952, THESIS IOWA STATE CO
[6]
HEADY EO, 1946, J FARM ECON, V28
[7]
JOHNSON GL, 1952, 1 KENT AGR EXP STAT
[8]
TINTNER G, 1944, J FARM ECON, V26