ISMAEL, A. J. Location factors and their impact on the end of the industry of gravel and sand in the district of Koya. Academic Journal of Nawroz University, [S. l.], v. 8, n. 2, p. 97–111, 2019. DOI: 10.25007/ajnu.v8n2a363. Disponível em: https://journals.nawroz.edu.krd/index.php/ajnu/article/view/363. Acesso em: 20 apr. 2024.