collection: 2subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES__enauthor: Spyropoulos, Vasileios_or_Zachos, Efstathios_or_Pagourtzis, Aristeidis_or_Mavridis, Ioannis