共 31 条
[21]
OSTERMANN J, 1977, THESIS HANNOVER
[22]
QVESEL J, 1983, VET TIDSSKR, V66, P378
[23]
ROSCH H, 1984, THESIS MUNICH
[24]
SHANKS RD, 1981, J DAIRY SCI, V64, P74
[26]
SOLBU H, 1983, Z TIERZ ZUCHTUNGSBIO, V100, P139
[27]
STEINBAUER M, 1985, THESIS MUNICH
[28]
THYSEN I, 1985, 588 BER FRA STAT HUS
[29]
VANARENDONK JAM, 1985, THESIS AGR U WAGENIN
[30]
WURM A, 1985, THESIS MUNICH