de MIGUEL GONZALEZ , Rafael. “GEOMEDIA FOR EDUCATION IN SUSTAINABLE DEVELOPMENT IN SPAIN. AN EXPERIENCE IN THE FRAMEWORK OF THE AIMS OF DIGITAL-EARTH.EU”. European Journal of Geography 3, no. 3 (November 1, 2012): 44–56. Accessed October 16, 2025. https://www.eurogeojournal.eu/index.php/egj/article/view/541.