Chán Santisteban ML, Peña Cordero W. Evaluation of surface water quality for human consumption potential in the upper reaches of Sis Icán, Guatemala. URJ [Internet]. 2015 Jun. 4 [cited 2024 Nov. 24];7(1):19-24. Available from: https://revistas.uned.ac.cr/index.php/cuadernos/article/view/838