Hameed Majeed , A. ., S. Hamza, M. ., & Raheem Kareem, H. . (2013). Mechanical and Tribological Behavior of Unsaturated Polyester NanoCarbon Black Composite. Journal of Engineering and Sustainable Development, 17(6), 78-86. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1026