collection: 3type: 999_or_104_or_102subjectTerm: III. ENGINEERING AND TECHNOLOGY_or_VI. HUMANITIES AND ARTS_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCESauthor: Krestenitis, Ioannis_or_Koutitas, Christoforos_or_Koumpis, Alexandros_or_Makris, Christos_or_Zafiropulos, Vassilis_or_Katsafados, Petroslang: el