The Impact of Human Resource Development on Improving Productivity "A Field study on Industrial Organization in the Hadhramaut Coast". Journal of Scientific Development, "for Studies and Research" (JSD), [S. l.], v. 7, n. 25, p. 216–242, 2026. DOI: 10.61212/jsd/489. Disponível em: https://jsd.sdasmart.org/index.php/jsd/article/view/489. Acesso em: 23 jun. 2026.