共 21 条
[1]
ARMSTRONG DL, 1969, 53 U NEBR DEP AGR EC
[3]
COST-SIZE RELATIONSHIPS FOR CASH CROP FARMS IN A HIGHLY COMMERCIALIZED AGRICULTURE
[J].
JOURNAL OF FARM ECONOMICS,
1961, 43 (02)
:264-277
[4]
FABER FL, 1969, POULTRY EGG SITUATIO, P10
[5]
FARIS JE, 1963, 269 U CAL GIANN F RE
[6]
GAROIAN L, 1969, ECONOMICS CONGLOMERA
[7]
HATHAWAY DE, 1968, NCR2068 OH STAT U DE, P55
[8]
JENNINGS RD, 1930, LARGE SCALE FARMING
[9]
KRAUSE KR, ECONOMIC POTENTIAL L
[10]
MACEACHERN GA, 1966, JAN C INT TRAD CAN A, P77