H., Hammada; MINDARI, Wanti; PRIYADARSHINI, Rossyda. Characterization of Humic Acid Using E4/E6 Ratio in Various Land Uses in Jatiarjo Village, Prigen District, Pasuruan. Engineering And Technology Journal, [S. l.], v. 9, n. 6, p. 4179–4185, 2024. DOI: 10.47191/etj/v9i06.01. Disponível em: https://everant.org/index.php/etj/article/view/1349. Acesso em: 22 jul. 2024.