Pereira, Omar Cleo Neves, Altair Bertonha, Paulo Sergio Lourenço de Freitas, e Caroline Silvano. 2015. “<B>Development and Calibration of an Electrolytic Cell for Ion Determination in a Soil Solution”. Acta Scientiarum. Technology 37 (2):189-92. https://doi.org/10.4025/actascitechnol.v37i2.19634.