SUBSORN, K. Chemistry and Fertility Characteristics of Paddy Soils in the Northern Region . Thai Agricultural Research Journal, [S. l.], v. 1, n. 1, p. 27–30, 1983. Disponível em: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/245703. Acesso em: 1 oct. 2026.