author: Spyropoulos, Vasileios_or_Michalopoulos, Andreas_or_Georgopoulos, Antonios_or_Μιχαλόπουλος, Χαρίλαος__ellang: elsubjectTerm: VI. HUMANITIES AND ARTS_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES