MBWETTE, T. S. A. DESIGN, OPERATION AND MAINTENANCE CONSIDERATIONS OF HORIZONTAL FLOW ROUGHING FILTERS PRECEDING SLOW SAND FILTERS. Tanzania Journal of Engineering and Technology, [S. l.], v. 15, n. 1, 2018. Disponível em: http://196.44.161.124/index.php/tjet/article/view/2185. Acesso em: 7 apr. 2026.