Tobón, Ricardo de los Ríos. “RAILS AND MOUNTAINS: WHEN ‘EL EJE CAFETERO’ STARTED TO RIDE ON WHEELS”. Ciencia Nueva, journal in History and Politics 1, no. 1 (December 5, 2016). Accessed October 16, 2024. https://ojs2.utp.edu.co/index.php/historia/article/view/14381.