subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS__encollection: 2author: Spyropoulos, Vasileios_or_Achilias, Dimitris_or_Perivolaropoulos, Leandros_or_Karkalousos, Petros_or_Papaioannou, Angelos_or_Tsotsou, Georgia Eleni_or_Fountzoula, Christina