Lira, V. S., Freire, A. G., Fracácio, R., & Morais, L. C. (2020). Evaluation of the Efficiency of a Septic Tank Combined with Anaerobic Filter, Filled with Plastic Residue, Including a Root Zone. Fronteiras - Journal of Social, Technological and Environmental Science, 9(2), 128–141. https://doi.org/10.21664/2238-8869.2020v9i2.p128-141