Efficiency of educational services in the city of Chamchamal: (A study in the geography of services). Journal of University of Raparin, [S. l.], v. 10, n. 2, p. 358–388, 2023. DOI: 10.26750/Vol(10).No(2).Paper15. Disponível em: https://journal.raparinuni2024.org/index.php/JUR/article/view/1026. Acesso em: 16 may. 2025.