Carrera, D., Crisanto, T., Guevara, P. and Maya, M. (2015) “Relationship between the inorganic chemical composition of water, precipitation and evaporation in the basin of Rio Grande, Chone, Ecuador”, Enfoque UTE, 6(1), pp. pp. 25 - 34. doi: 10.29019/enfoqueute.v6n1.52.