type: 7author: Plageras, Panagiotis_or_Ventouras, Errikos-Chaim_or_Spyropoulos, Vasileios_or_Pagourtzis, Aristeidis_or_Λιανός, Θεόδωρος__elsubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_V. LAW AND SOCIAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY