Meléndez, G., G. Fermeli, and An. Koutsouveli. “Analyzing Geology Textbooks for Secondary School Curricula in Greece and Spain: Educational Use of Geological Heritage”. Bulletin of the Geological Society of Greece 40, no. 4 (January 1, 2007): 1819–1832. Accessed December 20, 2024. https://ejournals.epublishing.ekt.gr/index.php/geosociety/article/view/17143.