共 21 条
- [1] BENDER C, 1942, NEW JERSEY AGR EXPT, V695
- [2] CONVERSE AT, 1949, USDA822 CIRC
- [3] DUNCAN DB, 1957, BIOMETRICS, V13, P168
- [4] HEADLEY FB, 1949, VALUE SILAGE HOLSTEI
- [6] KEENER HA, 1949, 77 NEW HAMPSH AGR EX
- [7] MATHEWS CA, 1954, USDA TECH B, V1099
- [8] MATHEWS CA, 1954, USDA TECH B, V1098
- [9] MCCORMICK JA, 1956, 9 NEV AGR EXPT STA C