Picado Alfaro, Miguel Evelio, and Jonathan Espinoza González. 2019. “The Didactic Suggestions into a Textbook of Arithmetic for Teacher Training in Normal Sections in Costa Rica in the Nineteenth Century”. Historia y Memoria de la Educación, no. 11 (December):151-90. https://doi.org/10.5944/hme.11.2020.25108.