Delgado Valdivia, Felipe. “FAR AWAY, SO CLOSE. ” RISE AND FALL IN THE COAL- MINING BORDER. THE CASE OF CURANILAHUE AND LEBU. 1880- 1930”. Revista De Historia Social Y De Las Mentalidades, vol. 16, no. 1, Aug. 2012, pp. 139-6, https://revistas.usach.cl/ojs/index.php/historiasocial/article/view/753.