共 16 条
[1]
ALLEN AD, 1959, 712 MO AGR EXP STA R
[2]
BARBER R. S., 1955, Journal of Agricultural Science, V46, P97, DOI 10.1017/S0021859600039654
[3]
BERGE S., 1953, Meldinger fra Norges Landbrukshogskole, V33, P389
[4]
DONALD H. P., 1937, EMPIRE JOUR EXP AGRIC, V5, P361
[5]
GREENSLADE J, 1952, MODERN PIG BREEDING
[7]
HEMPEL K, 1928, ZUCHTUNGSKUNDE, V37, P19
[9]
KOVACS J., 1954, Allattenyesztes, V3, P233
[10]
LALEVIC D., 1953, Arhiv poljopr. Nauke, V6, P123