Khan, Izhar ul Haque, and Iffat Tahira Siddique. “Chemical Extraction of Copper from Copper Sulphide Ores of Pakistan by Roast Leach Method: Copper Extraction from Copper Sulphide Ores”. Biological Sciences - PJSIR 53, no. 5 (October 25, 2010): 233–238. Accessed November 23, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/469.