Parada Rivera, Mabel Mariela, Juan Carlos González García, Slendi Monserrate Jácome Ampudia, Shomira Mariel Pacheco Palacios, and Sofia Katherine Erazo Chávez. “ Environmental Economic Assessment of the Air Resource in the Riobamba Canton ”. Ciencia Digital 4, no. 3 (July 31, 2020): 229-252. Accessed November 22, 2024. https://cienciadigital.org/revistacienciadigital2/index.php/CienciaDigital/article/view/1332.