On Coc-Preopen Sets in Topological Spaces. Al-Nahrain Journal of Science, [S. l.], v. 27, n. 4, p. 21–27, 2024. DOI: 10.22401/cdmxg117. Disponível em: https://anjs.edu.iq/index.php/anjs/article/view/2766.. Acesso em: 21 nov. 2024.