lang: elcollection: 3subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_VI. HUMANITIES AND ARTS_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_V. LAW AND SOCIAL SCIENCEStype: 4_or_999_or_112author: Anninos, Loukas_or_Saltas, Vasileios_or_Michelaki, Paraskevi