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Coccoloba tunii (Polygonaceae), a new species from Chiapas (Mexico)
ArticleAbstract: Coccoloba tunii is here described as a new species from Mexico. Morphological characters of the leafPalabras claves:Coccoloba, Coccoloba liebmanniiAutores:I Arnelas Seco, I. Arnelas, Ortiz-Díaz J.J., Pinzón J.P.Fuentes:rraaescopusSustainability assessment of two systems of ecological farming in the province of Tungurahua, Ecuador
ArticleAbstract: The study of sustainability of agroecosystems has become a necessity due to the problems associatedPalabras claves:Agroecosystems, Ecological, Economic, Indicators, SocialAutores:David Risco, E. Cruz, E. Ibarra-López, E. Quinga, I. ArnelasFuentes:scopus