GHABBOUR, Elham A; DAVIES, Geoffrey; DAGGETT, John L.; WORGUL, Christopher A.; WYANT, Gregory A.; SAYEDBAGHERI, Mir-M. Measuring the Humic Acids Content of Commercial Lignites and Agricultural Top Soils in the National Soil Project. Annals of Environmental Science, [S. l.], v. 6, 2012. Disponível em: https://openjournals.neu.edu/aes/journal/article/view/v6art1. Acesso em: 29 may. 2024.