BENYAMINA, M, L CHETIBI, and M BOUCHEAR. 2018. ā€œMINERALOGICAL CHARACTERIZATION OF SANDSTONE AND CLAY, NORTH-EAST CONSTANTINEā€. Journal of Sciences & Technology 3 (1). https://revue.umc.edu.dz/st/article/view/3108.