共 20 条
[2]
BEILHARZ R. G., 1963, ANIMAL BEHAVIOUR, V11, P529, DOI 10.1016/0003-3472(63)90275-6
[3]
Brantas G. C., 1968, Zeitschrift fur Tierzuchtung und Zuchtungsbiologie, V85, P64
[4]
Campbell D J, 1961, Can Vet J, V2, P414
[5]
CHARLICK RH, 1968, 11 EXPERIMENTAL FARM
[6]
EWBANK R, 1969, BRIT VET J, V125, P250
[7]
FERGUSON W, 1969, BRIT VET J, V125, P253
[8]
GELBACH GD, 1966, J ANIM SCI, V25, P386
[9]
HAFEZ ESE, 1962, BEHAVIOUR DOMESTI ED
[10]
HARVEY N, 1965, FARM BUILDINGS, P73