MUANGPRASERT, N. Rainfed Paddy Soil Fertility Evaluation in Upper Northern Region for Effective Fertilizer Application. Thai Agricultural Research Journal, [S. l.], v. 15, n. 1, p. 55–65, 1997. DOI: 10.14456/thaidoa-agres.1997.5. Disponível em: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/236522. Acesso em: 2 oct. 2026.