PRODUCTION OF MANUAL METAL ARC WELDING ELECTRODES WITH LOCAL RAW MATERIALS. Nigerian Journal of Technology, [S. l.], v. 29, n. 1, p. 121–125, 2009. DOI: 10.4314/njt.291.148. Disponível em: https://nijotech.com/index.php/nijotech/article/view/148. Acesso em: 16 apr. 2026.