共 9 条
[1]
BRANTON C, 1949, ARTIFICIAL BREEDERS, V1, P5
[2]
CLAPP H., 1934, Cornell Veterinarian, V24, P309
[3]
Donald H. P., 1943, VET REC, V55, P297
[4]
DONOHO HR, 1955, J DAIRY SCI, V38, P602
[5]
GILMORE LO, 1952, DAIRY CATTLE BREEDIN, P125
[6]
MIRSKAJA LJ, 1941, IZVEST ZOOTEH, V4, P80
[7]
MORRISON RA, 1957, WASHINGTON AGR EXPT, V25
[8]
SNEDECOR GW, 1946, STATISTICAL METHODS
[9]
THE OCCURRENCE OF ESTRUS IN PREGNANT EWES
[J].
JOURNAL OF ANIMAL SCIENCE,
1956, 15 (04)
:978-983