共 23 条
- [2] CLYDE WA, 1964, J IMMUNOL, V92, P958
- [3] COWAN ST, 1975, COWAN STEELS MANUAL
- [4] FRIIS NF, 1975, NORD VET MED, V27, P337
- [5] FRIIS NF, 1974, MYCOPLASMAS PIGS, P113
- [6] Gois M., 1980, Proceedings of the International Pig Veterinary Society Congress., P214
- [7] COMPARATIVE SUSCEPTIBILITY OF HYSTERECTOMY-PRODUCED, COLOSTRUM-DEPRIVED PIGS AND NATURALLY BORN, ENZOOTIC-PNEUMONIA-FREE PIGS TO ENZOOTIC PNEUMONIA [J]. JOURNAL OF HYGIENE-CAMBRIDGE, 1971, 69 (03): : 391 - +
- [9] HAMM D, 1976, P INT PIG VET SOC C, P3