共 23 条
- [4] BURGER JF, 1952, ONDERSTEPOORT J V S2
- [5] CARLE B. N., 1942, Journal of the American Veterinary Medical Association, V101, P495
- [6] DUBUISSON FD, 1964, 5 P INT C AN REPR, V3, P571
- [7] EDGVIST LE, 1971, J REPROD FERTIL, V25, P447
- [8] Henricks D. M, 1970, Biology Reprod., V2, P346, DOI 10.1095/biolreprod2.3.346