Лобенко, Сергій. “V. Gurov and Geological Collection of Kharkiv University”. V. N. Karazin Kharkiv National University Bulletin ‘History of Ukraine. Ukrainian Studies: Historical and Philosophical Sciences’ 230 (June 9, 2017): 151-154. Accessed April 19, 2024. https://periodicals.karazin.ua/uahistory/article/view/8621.