共 15 条
- [11] ODELL WT, 1954, J DAIRY SCI, V37, P652
- [12] FERTILIZING CAPACITY OF BULL SPERMATOZOA AFTER FREEZING AT-79-DEGREES-C [J]. NATURE, 1952, 169 (4302) : 626 - 627
- [14] STOWER J, 1953, VET RECORD, V65, P560
- [15] WILLIAMS JA, 1954, 7TH P ANN CONV NAAB