Mr.Pruthviraj Chavan, and Dr. Anant Gujar. 2016. “Study the Effect of Machining Parameter on Surface Roughness in Drilling of SG 500/7 Material”. International Journal of Advance Engineering and Research Development (IJAERD) 3 (7):108-15. https://www.ijaerd.org/index.php/IJAERD/article/view/1533.