collection: 2author: Spiliopoulos, Ioakeim_or_Pagourtzis, Aristeidis_or_Markou, Evripidis_or_Zachos, Efstathios_or_Kranakis, Evangelos_or_��������������������, ��������������������__elsubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCElang: el