Quiroz Fernández LS, Izquierdo Kulich E, Menéndez Gutiérrez C. STUDY OF THE ENVIRONMENTAL IMPACT OF WASTEWATER DISCHARGES ON THE SELF-PURIFICATION CAPACITY IN PORTOVIEJO RIVER, ECUADOR. sugar_center [Internet]. 2018Jan.1 [cited 2025Jun.25];45(1):11. Available from: http://centroazucar.uclv.edu.cu/index.php/centro_azucar/article/view/55