collection: 1subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGYauthor: Gitzenis, Savvas_or_Papaioannou, Angelos_or_Meletiou Christou, Maria Sonia_or_Plageras, Panagiotis_or_Spyropoulos, Vasileios_or_Σπυρόπουλος, Βασίλειος__el