collection: 3type: 110_or_106_or_112lang: elauthor: Mavromatidis, Ilias_or_Chytiris, Leonidas_or_Anninos, Loukas_or_Charmandaris, Evangelos_or_Katsafados, PetrossubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_V. LAW AND SOCIAL SCIENCES