Pérez Gómez, Gabriela, Virginia Alvarado García, Jorengeth Abad Rodríguez Rodríguez, Federico Herrera, and Rolando Sánchez Gutiérrez. 2021. “Physicochemical and Microbiological Quality of Surface Water in the Grande De Tárcoles River, Costa Rica: An Ecological Approach”. UNED Research Journal 13 (1):e3148. https://doi.org/10.22458/urj.v13i1.3148.