Witkowska-Dąbrowska, M. 2018. Evaluation of The Attainment of Environmental Goals in Sustainable Growth Regarding Gas Emission and Energy Consumption, as Defined for Poland in the Europe 2020 Strategy. Olsztyn Economic Journal. 13, 4 (Dec. 2018), 397–409. DOI:https://doi.org/10.31648/oej.2738.