MISZTAL M. On the application of selected exploratory data analysis methods to assess differences in the level of sustainable development in the environmental domain of voivodships in Poland. ees [Internet]. 2018 Oct. 31 [cited 2024 Nov. 2];18(2 (46):747-61. Available from: https://czasopisma.uni.opole.pl/index.php/ees/article/view/101