collection: 2author: Samarkos, Michail_or_Kokkinos, Alexandros_or_Andrikopoulos, Nikolaos_or_Zachos, Efstathios_or_Pagourtzis, Aristeidis_or_Pagourtzis, Aristeidis__ensubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCESlang: el