Morales Iglesias, H., A. Priego Santander, and M. Bollo Manent. “The Map of the Physical-Geographical Landscapes of the Chiapas State, 1: 250 000 Scale.”. Terra Digitalis, Vol. 1, no. 1, Apr. 2017, pp. 1-7, doi:10.22201/igg.terradigitalis.2017.1.8.