Pereira, E. L.; Campos, C. M. M.; Motteran, F. <b>Physicochemical Study of PH, Alkalinity and Total Acidity in a System Composed of Anaerobic Baffled Reactor in Series With Upflow Anaerobic Sludge Blanket Reactor in the Treatment of Pig Farming wastewater</b> - Doi: 10.4025/actascitechnol.V35i3.14069. Acta Sci. Technol. 2013, 35, 477-483.