“Evaluation of the Voltaic Arc Welding Training at Codesa, Esmeraldas: Diagnosis and Recommendations”. Revista Científica Interdisciplinaria Investigación y Saberes 15, no. 3 (September 10, 2025): 97–112. Accessed November 6, 2026. http://www.revistasdigitales.utelvt.edu.ec/revista/index.php/investigacion_y_saberes/article/view/342.