HUMIC ACID CRACKING BY ACTIVATED CLAY CATALYSTS AND IDENTIFICATION OF ITS PRODUCTS. TROPICAL WETLAND JOURNAL, [S. l.], v. 1, n. 1, p. 9–17, 2015. DOI: 10.20527/twj.v1i1.12. Disponível em: https://twj.ulm.ac.id/index.php/twj/article/view/12. Acesso em: 4 aug. 2025.