Kopytov, S. and Demakov, D. (2017) “NATURAL SURROUNDINGS OF MEDIEVAL SOCIETIES IN THE UPPER KAMA VALLEY”, Perm Federal Research Centre Journal, (3), pp. 6–14. Available at: https://journal.permsc.ru/index.php/pscj/article/view/PSCJ2016n3p2 (Accessed: 22 July 2024).