KAILA, A. Fractions of inorganic phosphorus in Finnish mineral soils. Agricultural and Food Science, [S. l.], v. 36, n. 1, p. 1–13, 1964. DOI: 10.23986/afsci.71607. Disponível em: https://journal.fi/afs/article/view/71607. Acesso em: 18 jul. 2024.