1. Department of History of Education and Comparative Education, National University of Distance Education (UNED), 28040 Madrid, Spain
2. International Doctoral School of the UNED (EIDUNED), National Distance Education University (UNED), 28040 Madrid, Spain
3. Plant Production and Agrifood Quality Research Group (PROVECAv), St. Teresa of Jesus Catholic University of Avila (UCAV), 05005 Avila, Spain
4. Consell Insular de Menorca, Balearic Islands, 07702 Menorca, Spain