KAILA, A.; HÄNNINEN, P. Response of ley plants to rock phosphate and superphosphate. Agricultural and Food Science, [S. l.], v. 32, n. 1, p. 52–61, 1960. DOI: 10.23986/afsci.71536. Disponível em: https://journal.fi/afs/article/view/71536. Acesso em: 23 nov. 2024.