Deficiency of Rare-Earth Elements in Natural Landscape Components as a Cause of Geophagy among Ungulates on Olkhon Island. - Panichev, A. M.; Baranovskaya, N. V.; Chekryzhov, I. Yu.; Seryodkin, I. V.; Ivanov, V. V.; Vakh, E. A.; Elovskii, E. V. (Doklady Earth Sciences, 2023)