USE OF BIOSOLIDS FROM WASTEWATER TREATMENT PLANTS AS AN ADDITION IN CONCRETE PAVERS FOR POSSIBLE USE ON PEDESTRIAN SERVICE ROADS IN COLOMBIA. CASE STUDY SPAIN. semilleros [Internet]. 2019 Mar. 1 [cited 2026 Oct. 24];6(11):51-64. Available from: https://revistas.fio.unam.edu.ar/index.php/semillero/article/view/286