“EFFECT OF ADDING NANO – POWDER ON COMPOSITE PIPES BEHAVIOR SUBJECTED TO MULTI STRESSES”, J. eng. sustain. dev., vol. 21, no. 4, pp. 184–200, Jul. 2017, Accessed: Jul. 03, 2024. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/514