LUMBANRAJA, J.; MULYANI, S.; UTOMO, M.; SARNO, S. Phosphorus Extraction from Soil Constituents Using Bray P-1, Mehlich-1 and Olsen Solutions. JOURNAL OF TROPICAL SOILS, [S. l.], v. 22, n. 2, p. 67–76, 2017. DOI: 10.5400/jts.2017.v22i2.67-76. Disponível em: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/67. Acesso em: 15 jul. 2025.