1. Departments of Preschool and Primary Education; University of Thessaly; Argonafton & Filellinon 38221 Volos Greece
2. Department of Education; University of Cyprus; P. O. Box 20537 Nicosia, 1678 Cyprus
3. Department of Life Sciences; European University Cyprus; 6 Diogenis St., Engomi, P.O. Box 22006 1516, Nicosia Cyprus