Mañunga T, Rodríguez Victoria JA, Torres Lozada P. Domestic wastewater treatment without primary clarification by contact stabilization activated sludge process. Ing. y Des. [Internet]. 2012Dec.18 [cited 2025Apr.3];30(2):246-60. Available from: https://rcientificas.uninorte.edu.co/index.php/ingenieria/article/view/3986