Media type: E-Article Title: Classification of EU Countries in Terms of the Level of Sustainable Development Contributor: Stec Małgorzata; Grzebyk Mariola Published: 2017 Published in: Ovidius University Annals: Economic Sciences Series (2017) 2, Seite 126-131 Language: English ISSN: 2393-3127 Origination: Footnote: Access State: Open Access