extent of implementation of lean manufacturing in industrial organizations A case study of the cement and derivatives corporation in chlef. JEA [انترنت]. 30 سبتمبر، 2025 [وثق 5 أبريل، 2026];9(2):868-87. موجود في: https://journals.univ-ghardaia.edu.dz/idafat/article/view/1885