Characterization and valuation of clays in the north eastern region - Hmeid, Hanane Ait; Akodad, Mustapha; Baghour, Mourad; El Gattafi, Mohamed; Moumen, Abdelmajid; Aknaf, Asmae; Daoudi, Lahcen; Aalaoul, Mimoun; Kallel, A; Ksibi, M; BenDhia, H; Khelifi, N (Advances in Science, Technology and Innovation, 2018)