Akhtar, K., Khan, A.M., Khalid, Q.S., Babar, A., Azim, S., Akhtar, R., Shah, F. and Khan, N. 2018. Effect of Top and Bottom Gating System in Sand Casting of Aluminum Alloy Al 6063-T5. Journal of the Pakistan Institute of Chemical Engineers. 46, 1 (Mar. 2018), 9–16.