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Guilherme, R. de F.; Lima, A. M. C.; Alves, J. R. A.; Costa, D. F. da; Pinheiro, R. R.; Alves, F. S. F.; Azevedo, S. S. de; Alves, C. J. Characterization and Typology of Sheep and Goat Production Systems in the State of Paraíba, a Semi-Arid Region of Northeastern Brazil. Semina: Ciênc. Agrár. 2017, 38, 2163-2178.