共 14 条
[1]
CHAPMAN AB, 1936, PASAP 29 AM, P52
[2]
DIXON, 1951, INTRO STATISTICAL AN
[3]
Gethin R. H., 1950, Animal Breeding Abstracts, V18, P133
[4]
HUTCHINSON J. B., 1937, Indian Journal of Veterinary Science, V7, P79
[5]
JOHANSSON IVAR, 1940, K LANDT BRUKS AKAD HANDL OCH TIDSKR, V79, P1
[6]
KLIESCH J., 1952, Zuchtungskunde, V23, P228
[8]
RATHORE A, 1949, THESIS IOWA STATE CO
[9]
ROTH FJ, 1951, THESIS LANDW HOCHSCH
[10]
SCHNEIDER BH, 1944, ALLAHABAD FARMER, V18, P36