Iron Oxide Contents in Relation to the Colour of Asnawa Soils. UKH Journal of Science and Engineering, [S. l.], v. 1, n. 1, p. 89–94, 2017. DOI: 10.25079/ukhjse.v1n1y2017.pp89-94. Disponível em: https://journals.ukh.edu.krd/index.php/ukhjse/article/view/8.. Acesso em: 12 oct. 2024.