Amrani, Sidi-Mohammed2014-02-062014-02-062014-02-06https://dspace.univ-tlemcen.dz/handle/112/3821fragrochimiquepedogenetiquecontribution-a-l-etude-agrochimique-et-pedogenetique-des-zones-de-hautes-plaines-steppiques-de-la-wilaya-de-tlemcen