Alfaro Rojas, D., Portuguez Brenes, I., Perdomo Velázquez, H. and Vargas Masís, R. 2020. Environmental noise in urban and periurban green areas of a micro basin in Heredia, Costa Rica. UNED Research Journal. 12, 2 (Oct. 2020), e2846. DOI:https://doi.org/10.22458/urj.v12i2.2846.