Jomhataikool B, Faungnawakij K, Kuboon S, Kraithong W, Chutipaichit S, Fuji M, Eiad-Ua A. Effect of humic acid extracted from Thailand’s leonardite on rice growth. J Met Mater Miner [Internet]. 2019 Mar. 29 [cited 2024 Apr. 20];29(1). Available from: https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/400