On Some Open Mapping. Journal of the College of Basic Education, [S. l.], v. 15, n. 56, p. 33–40, 2023. DOI: 10.35950/cbej.v15i56.9441. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/9441.. Acesso em: 6 jul. 2024.