SIRIPAIBOOL, C. Dinitrogen Fixation by Soybean under Zero and Conventional Tillage as Determined by Isotope Technology . Thai Agricultural Research Journal, [S. l.], v. 2, n. 2, p. 120–127, 1984. Disponível em: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/245670. Acesso em: 1 oct. 2026.