PROKOF’EVA, Tatiana Vadimovna. Experience of the teaching of soil classification systems to students at different stages of education (Faculty of Soil Science, LMSU, Russia). Bulletin of Geography. Physical Geography Series. Online. 18 May 2018. No. 14, pp. 85-90. [Accessed 22 February 2026]. DOI 10.2478/bgeo-2018-0008.