LEŹNICKI, M.; LEWANDOWSKA, A. Implementation of sustainable development on the example of the concept of eco-city. Ecological Questions, [S. l.], v. 19, p. 91–96, 2014. DOI: 10.12775/EQ.2014.010. Disponível em: https://apcz.umk.pl/EQ/article/view/EQ.2014.010. Acesso em: 28 sep. 2024.