共 18 条
- [2] BALDWIN RL, 1969, 3 INT S PHYSIOL DIG
- [4] DEINUM B, 1968, Netherlands Journal of Agricultural Science, V16, P217
- [5] DEMARQUILLY C, 1965, 9 P INT GRASSL C, P877
- [7] DONEFER E, 1969, SEP NAT C FOR QUAL
- [9] GOERING HK, 1970, USDA379 ARS AGR HAND
- [10] JOHNSON RR, 1959, J ANIMAL SCI, V18, P520