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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)
1982
T. S. Ch'ang and Evans, R., Heterotic basis of breeding policy for lamb production, in Proceedings of the World Congress on Genetics applied to Livestock Production., 1982, vol. 8. Symposia (2), pp. 796-801. (252.36 KB)
1974
T. S. Ch'ang and Dunlop, A. A., Within breed selection for improvement in reproductive rate., Proceedings of the World Congress on Genetics applied to Livestock Production., vol. 1, pp. 713–723, 1974. (3.67 MB)