SNITWONGSE, P. Selection of Non-Fixing Control Plants for Use in 15 N Dilution Method of Quantifying Dinitrogen Fixation in Soybean . Thai Agricultural Research Journal, [S. l.], v. 4, n. 2, p. 99–105, 1986. Disponível em: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/245175. Acesso em: 1 oct. 2026.