HOANG, Nguyen Van; DAO, Le Quang; VAN, Dong Thu; HOA, Pham Lan. Heavy metal contamination of soil based on pollution, geo-accumulation indices and enrichment factor in Phan Me coal mine area, Thai Nguyen province, Vietnam. <b>Vietnam Journal of Earth Sciences</b>, <i>[S. l.]</i>, v. 42, n. 2, p. 105–117, 2020. DOI: 10.15625/0866-7187/42/2/14950. Disponível em: http://vjes.vast.vn/jse/article/view/14950. Acesso em: 8 nov. 2025.