Anđelković T, Perović J, Blagojević S, Purenović M, Nikolić R, Bojić A, Anđelković D. Acidity of humic acid related to its oxygen-containing functional groups. Maced. J. Chem. Chem. Eng. [Internet]. 2006 Dec. 14 [cited 2024 Nov. 21];25(2):131-7. Available from: https://mjcce.org.mk/index.php/MJCCE/article/view/297