共 15 条
[1]
BATTESE GE, 1968, J AGR ECON, V19, P355, DOI 10.1111/j.1477-9552.1968.tb01344.x
[6]
COOKE R, 1968, ANIM PROD, V10, P237
[7]
DAVIS RH, 1965, ANIM PROD, V7, P285
[8]
FISHER RA, 1953, STATISTICAL TABLES B
[9]
FRAPE DL, 1968, ANIM PROD, V10, P244
[10]
KING JWB, 1965, ANIM PROD, V7, P279