共 23 条
[3]
BEACOM S. E., 1959, CANADIAN JOUR ANIMAL SCI, V39, P71
[5]
BOWLAND J. P., 1959, CANADIAN JOUR ANIMAL SCI, V39, P102
[6]
CHAMBERS JR, 1967, THESIS U GUELPH
[9]
DRURY BK, 1962, THESIS ONTARIO AGRIC