Possibility of overcoming obstacles to adopt sustainable practices of road paving layers in Iraq. Periodicals of Engineering and Natural Sciences, [S. l.], v. 9, n. 3, p. 418–427, 2021. DOI: 10.21533/pen.v9.i3.860. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/860. Acesso em: 21 apr. 2026.