共 10 条
- [1] Baker Marvel L., 1943, JOUR ANIMAL SCI, V2, P3
- [2] Guilbert H. R., 1944, JOUR ANIMAL SCI, V3, P143
- [3] HAZEL LN, 1943, J ANIM SCI, V3, P143
- [4] LUSH JL, 1940, AM SOC ANIM PROD P, P293
- [5] LUSH JL, 1936, IOWA AGR EXP STA RES, V204, P109
- [6] Nordskog Arne W., 1944, JOUR ANIMAL SCI, V3, P257
- [7] SNEDECOR GW, 1937, STATISTICAL METHODS
- [8] TERRILL C. E., 1943, Journal of Animal Science, V2, P358
- [9] Whatley JA, 1942, J AGRIC RES, V65, P0249
- [10] Winsor CP, 1940, J MAR RES, V3, P1