共 23 条
[11]
FRITSCHEN RD, 1976, NEBRASKA SWINE REP, V79, P219
[12]
GLATTLI HR, 1975, ZBL VET MED A, V22, P102
[14]
HALAMA AK, 1979, WIEN TIERARZTL MONAT, V66, P370
[15]
HARVEY WR, 1977, MIXED MODEL LEAST SQ
[16]
Jensen A. H., 1979, Proceedings, Pig Veterinary Society, V5, P85
[18]
OSBORNE H. G., 1955, New Zealand Veterinary Journal, V3, P91, DOI 10.1080/00480169.1955.33189
[19]
Penny R. H. C., 1963, Veterinary Record, V75, P1225