ISHIZUKA, A. Humus Composition of Paddy Soils in Central Plain . Thai Agricultural Research Journal, [S. l.], v. 1, n. 2, p. 100–105, 1983. Disponível em: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/245729. Acesso em: 1 oct. 2026.