DJAOUAD, Dharif, Sami ABDELMADJID, and Chaouki AZEDDINE. 1. “The Impact of the Movement of the Slopes on the Stability of the Population in the Countryside.”. Social Sciences Journal 10 (2). Laghouat, ALGERIA, 71-81. http://journals.lagh-univ.dz/index.php/ssj/article/view/2877.