共 23 条
[1]
AHLGREN M, 1962, J REPROD FERTIL, V3, P89
[3]
BOYD H., 1961, British Veterinary Journal, V117, P18
[4]
BOYD HUGH, 1961, BRIT VET JOUR, V117, P74
[6]
DELANGE M, 1950, ONDESTEPOORT J VET S, V24, P126
[7]
FAHNING ML, 1967, J REPROD FERTIL, V13, P229, DOI 10.1530/jrf.0.0130229
[8]
FISHER RA, 1963, STATISTICAL TABLES B
[9]
HOLT AF, 1961, HAGUE, V4, P796
[10]
Hunter G. L., 1955, Journal of Agricultural Science, V46, P143, DOI 10.1017/S0021859600039897