Titenko, G. V., and V. V. Medvedev. “The Role of Soil Cover in Optimizing the Social Policy of Ukraine”. Visnyk of V. N. Karazin Kharkiv National University. Series Еcоlogy0, no. 18 (June 27, 2018): 14-21. Accessed November 23, 2024. https://periodicals.karazin.ua/ecology/article/view/11067.