Ahmed, Yassin Mustafa, Hameed D. Lafta, A. A. Abdul Rahman, and Barzan Talib Salih. “Experimental Study of the Performance of Base Metal and Welding Line of the Household LPG Cylinder Manufactured in Kurdistan Region”. International Journal of Engineering Materials and Manufacture 4, no. 3 (August 12, 2020): 116–123. Accessed November 29, 2021. https://deerhillpublishing.com/index.php/ijemm/article/view/107.