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2006
B. J. Heins, Hansen, L. B., and Seykora, A. J., Fertility and survival during first lactation of crossbred dairy cows sired by bulls from Swedish, Norwegian, and French Red breeds compared to pure Holstein cows., Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, p. 01.05, 2006.