Faris, A.M. and Hassan, A.R.A. (1999) “Effect Of External Labor Force in Agricultural Development of Jabel El–Akhdar Region, North East Libya ”, Al-Mukhtar Journal of Sciences, 6(1), pp. 55–67. Available at: https://mdp.omu.edu.ly/journals/index.php/mjsc/article/view/2841 (Accessed: 6 May 2026).