سلیمان د. . PRODUCTIVITY IN DEVELOPING COUNTRIES (LESSONS FOR LIBYA. Dirasat in Economics and Business , [S. l.], v. 5, n. 2, 1969. DOI: 10.37376/deb.v5i2.3069. Disponível em: https://journals.uob.edu.ly/index.php/DEB/article/view/3069. Acesso em: 5 jun. 2026.