Soils characterization and classification in clean field, dirty field and forest areas in amazonian environments. Bioscience Journal [online], 2019. [online], vol. 35, no. 4, pp. 1083–1098. [Accessed13 December 2025]. DOI 10.14393/BJ-v35n4a2019-42130. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/42130.