Chaiwanakupt P. Improving Yield and Nitrogen Fixation on Soybean in Thailand. Thai Agric.Res.J. [internet]. 1997 Jan. 22 [cited 2026 Sep. 30];15(1):4-23. available from: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/236409