Vallin, V. M.; Beloti, V.; Battaglini, A. P. P.; Tamanini, R.; Fagnani, R.; Angela, H. L. da; Silva, L. C. C. da. Milk Quality Improvement After Implantation of Good Manufacturing Practices in Milking in 19 Cities of the Central Region of Paraná. Semina: Ciênc. Agrár. 2009, 30, 181-188.