BAKKALI, S. A resistivity survey of phosphate deposits containing hardpan pockets in Oulad Abdoun, Morocco. Geofísica Internacional, [S. l.], v. 45, n. 1, p. 73–82, 2006. DOI: 10.22201/igeof.00167169p.2006.45.1.193. Disponível em: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/205. Acesso em: 2 may. 2024.