IKRAM, BACHIRI LWIZA2024-01-082024-01-082023-07-15http://dspace.univ-msila.dz:8080//xmlui/handle/123456789/41848To the owner of a fragrant biography and enlightened thought, for he had the first credit in attaining higher education (my beloved father), may God prolong his life. To those who set me on the path of life, made me calm, and took care of me until I became old my mother. To the kind soul in the sky my first attempt for you Elhachmi BashiriotherThesis