共 6 条
[1]
BALTZER J., 1964, Zuchtungskunde, V36, P317
[2]
NEIMANN-S0RENSEN A., 1961, ACTA AGRIC SCAND, V11, P163
[3]
RAUSCH WH, 1967, JUN DAIR SCI M ITHAC
[4]
SCHRAPE H, 1966, THESIS GEORGAUGUSTU
[6]
SMITH C, 1967, J AN PROD, V9, P349