Escuela activa : selección de textos - Nieto Caballero, Agustín, 1889-1975 (Bogotá, D.C. : Gimnasio Moderno, 2014)
Online resource; title from ePub title page (Digitalia, viewed June16, 2017)
Keywords: Education -- Colombia; Teaching -- Colombia; Teachers -- Training of -- Colombia -- Philosophy; Gimnasio Moderno (Bogotá, Colombia); Electronic books