共 44 条
- [1] BAKER AA, 1956, AUS VET J, V45, P180
- [4] CLAUS R, 1982, FACTORS INFLUENCING, P288
- [5] DIJKHUIZEN AA, 1983, THESIS UTRECHT
- [6] DIJKHUIZEN AA, 1980, PUBL AFD AGR EC VAKG, V4
- [7] DISTL O, 1982, 2ND P WORLD C GEN AP, V7, P580
- [8] DREES B, 1982, THESIS KIEL
- [9] Esslemont R. J., 1982, Factors influencing fertility in the postpartum cow. A seminar in the CEC Programme of Coordination of Research on Beef Production held at Freising, September 30-October 2, 1981., P442
- [10] FARRIES E, 1983, ZUCHTUNGSKUNDE, V55, P265