Heavy metals in agricultural soils of the Llallimayo sub-basin, department of Puno . C&T Riqchary Science and technology research magazine, [S. l.], v. 4, n. 1, p. 12–19, 2022. DOI: 10.57166/riqchary/v4.n1.2022.83. Disponível em: https://revistas.unamba.edu.pe/index.php/riqchary/article/view/37. Acesso em: 13 nov. 2026.