.A.S. JEGHATA, H.; M. MUHAWISH, N. Effect of three tillage systems, levels of plant residues and type of crop on some physical properties and organic carbon fractions in a gypsiferous soil. College of Basic Education Research Journal, [S. l.], v. 17, n. 1, p. 929–954, 2021. DOI: 10.33899/berj.2021.167750. Disponível em: https://moss.uomosul.edu.iq/index.php/berj/article/view/39040. Acesso em: 26 oct. 2025.