CAUSES OF VARIATION IN LENGTH OF GESTATION IN DAIRY CATTLE

[1] ALEXANDER MH, 1950, J DAIRY SCI, V33, P377

[2] CARMICHAEL WJ, 1920, ILL AGR EXP STA B, V226

[3] CHAPMAN AB, 1931, THESIS IOWA STATE CO

[4] COPELAND LYNN, 1930, JOUR DAIRY SCI, V13, P257

[5] Kelley R. B., 1943, AUSTRALIAN VET JOUR, V19, P43, DOI 10.1111/j.1751-0813.1943.tb01508.x

[6] Knapp B, 1940, J AGRIC RES, V61, P0277

[7] KNOOP CE, OHIO AGR EXP STA BIM, V166

[8] KNOTT J. C., 1932, JOUR DAIRY SCI, V15, P87

[9] LITTLEWOOD R. W., 1937, Agriculture and Live-stock in India, V7, P61

[10] Lush JL, 1934, GENETICS, V19, P0329

[1] ALEXANDER MH, 1950, J DAIRY SCI, V33, P377

[2] CARMICHAEL WJ, 1920, ILL AGR EXP STA B, V226

[3] CHAPMAN AB, 1931, THESIS IOWA STATE CO

[4] COPELAND LYNN, 1930, JOUR DAIRY SCI, V13, P257

[5] Kelley R. B., 1943, AUSTRALIAN VET JOUR, V19, P43, DOI 10.1111/j.1751-0813.1943.tb01508.x

[6] Knapp B, 1940, J AGRIC RES, V61, P0277

[7] KNOOP CE, OHIO AGR EXP STA BIM, V166

[8] KNOTT J. C., 1932, JOUR DAIRY SCI, V15, P87

[9] LITTLEWOOD R. W., 1937, Agriculture and Live-stock in India, V7, P61

[10] Lush JL, 1934, GENETICS, V19, P0329