共 20 条
[1]
ALLISTON CW, 1956, P ASSOC SOUTHERN AGR, V54, P89
[2]
[Anonymous], J DAIRY SCI
[3]
BARRETT GR, 1948, J DAIRY SCI, V31, P682
[4]
BARRETT GR, 1948, J DAIRY SCI, V31, P683
[5]
BRANTON C, 1956, J DAIRY SCI, V39, P933
[6]
BRANTON C, 1954, BREEDING DIFFICULTIE
[9]
DUTT RH, 1956, J ANIM SCI, V15, P1287
[10]
DUTT RH, 1960, J DAIRY SCI S, V43