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1986
L. D. Young, Dickerson, G. E., Ch'ang, T. S., and Evans, R., Heterosis retention in sheep crossbreeding., Proceedings of the World Congress on Genetics applied to Livestock Production, vol. IX. Breeding programs for dairy and beef cattle, water buffalo, sheep, and goats., pp. 497–508, 1986. (3.84 MB)
T. S. Ch'ang and Evans, R., Male heterosis effect on lamb production traits of the ewe., Proceedings of the World Congress on Genetics applied to Livestock Production, vol. IX. Breeding programs for dairy and beef cattle, water buffalo, sheep, and goats., pp. 547–552, 1986. (1.75 MB)