Cárdenas Grajales, G.I. and Acevedo Osorio, Álvaro 2015. Evaluation of the sustainability of peasant production systems of the Association of Organic Coffee Growers of Colombia - ACOC- Valle del Cauca. Producción Agropecuaria y Desarrollo Sostenible. 4, (Sep. 2015), 109–135. DOI:https://doi.org/10.5377/payds.v4i0.3967.