Abbas F, Sabah Al-Ameen E, Abd Al Majaid Mahmoud F. EFFECT OF ADDING NANO – POWDER ON COMPOSITE PIPES BEHAVIOR SUBJECTED TO MULTI STRESSES. J. eng. sustain. dev. 2017;21(4):184-200. Accessed June 20, 2026. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/514