RODRÍGUEZ, J. Preliminary report on estimating potassium content of soils and minerals. Ars Pharmaceutica (Internet), [S. l.], v. 1, n. 3-4, p. 234–239, 1960. Disponível em: https://revistaseug.ugr.es/index.php/ars/article/view/5815. Acesso em: 3 jul. 2024.