共 28 条
[21]
ROOK J. A. F., 1958, JOUR AGRIC SCI, V51, P199, DOI 10.1017/S0021859600034171
[22]
SHAW JC, 1959, J NUTR, V69, P235, DOI 10.1093/jn/69.3.235
[23]
SNEDECOR GW, 1956, STATISTICAL METHODS
[24]
SOMMERFIELD K, 1928, TIERZUCHTER, V42, P838
[25]
TYZNIK W, 1951, J DAIRY SCI, V34, P493