BACKGROUND CONCENTRATION OF MICROELEMENTS IN ULAANBAATAR REGIONAL NATURAL SURFACE SOIL. Proceedings of the Mongolian Academy of Sciences, [S. l.], v. 58, n. 2, p. 15–24, 2018. DOI: 10.5564/pmas.v58i2.1001. Disponível em: https://mongoliajol.info/index.php/PMAS/article/view/1001. Acesso em: 2 jul. 2026.