Makarewicz-Marcinkiewicz, Agnieszka. “The Holistic Concept of Sustainable Development in Strategies of Polish Voivodeships to the Year 2020”. Problemy Ekorozwoju 10, no. 2 (July 1, 2015): 71–78. Accessed July 22, 2024. https://ph.pollub.pl/index.php/preko/article/view/4914.