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Filho, G. N. J.; Verneque, R. da S.; Lemos, Álvaro de M.; da Silva, H. C. M.; Reis, R. B. Physiological and Environmental Effects on First Calving Age in Milking Crossbred Cows of the Production System at the CNPGL Embrapa. PAB 1992, 27, 143-151.