共 18 条
[4]
CHRISTIAN RE, 1948, J ANIM SCI, V7, P540
[6]
GILL JL, 1971, J ANIM SCI, V33, P331
[8]
HELWIG JT, 1979, USERS GUIDE STATISTI, P245
[10]
HOFFMAN B, 1974, Theriogenology, V2, P21, DOI 10.1016/0093-691X(74)90040-5