SALEH AL-NUAIMI, Haidar Ibrahim. The Impact of Human Capital in Building Core Competences An exploratory study of the opinions of a sample of managers working in the Salah al-Din Education Directorate Office. Tikrit Journal of Administrative and Economic Sciences, [S. l.], v. 19, n. 62, 1, p. 299–318, 2023. DOI: 10.25130/tjaes.19.62.1.16. Disponível em: https://www.tjaes.org/index.php/tjaes/article/view/815. Acesso em: 20 sep. 2026.