PÉREZ MIRANDA, C.; CALLAO, V. Identification of nitrifying germs of arid soils. Ars Pharmaceutica (Internet), [S. l.], v. 11, n. 1-2, p. 35–40, 1969. Disponível em: https://revistaseug.ugr.es/index.php/ars/article/view/9700. Acesso em: 6 may. 2024.