E.S. AL- Sammk, B. and M.M AL-Rahawi, S. 2018. Cleaner Production Principles and their Role In Promoting Occupational Health and Safety An Exploratory Study Of the Views Of a Sample Of Managers In the General Company For Northern Cement. TANMIYAT AL-RAFIDAIN. 37, 120 (Dec. 2018), 131–146. DOI:https://doi.org/10.33899/tanra.2018.159997.