Weller, J. Marvyn (1928). "The Cenozoic History of the Northwest Punjab". The Journal of Geology. 36 (4). Chicago Journals: 362–375. doi:10.1086/623522. JSTOR30055696. S2CID129105623.
Qazi Muhammad Sharif; Mumtaz Hussain; Muhammad Tahir Hussain (December 2007). Viqar Uddin Ahmad; Muhammad Raza Shah (eds.). "Chemical Evaluation of Major Salt Deposits of Pakistan"(PDF). Journal of the Chemical Society of Pakistan. 29 (26). Chemical Society of Pakistan: 570–571. Retrieved 15 April 2012.
jstor.org
Weller, J. Marvyn (1928). "The Cenozoic History of the Northwest Punjab". The Journal of Geology. 36 (4). Chicago Journals: 362–375. doi:10.1086/623522. JSTOR30055696. S2CID129105623.
"Khewra Salt Mines Project". Pakistan Mineral Development Corporation. Privatisation Commission of Pakistan. Archived from the original on 25 July 2012. Retrieved 12 April 2012.
semanticscholar.org
api.semanticscholar.org
Weller, J. Marvyn (1928). "The Cenozoic History of the Northwest Punjab". The Journal of Geology. 36 (4). Chicago Journals: 362–375. doi:10.1086/623522. JSTOR30055696. S2CID129105623.
"Khewra Salt Mines Project". Pakistan Mineral Development Corporation. Privatisation Commission of Pakistan. Archived from the original on 25 July 2012. Retrieved 12 April 2012.
Dorothy K. Moore. "The Significance of Salt"(PDF). Eugene: Material Science Institute, University of Oregon. p. 33. Archived from the original on 1 March 2015. Retrieved 8 April 2012.{{cite web}}: CS1 maint: bot: original URL status unknown (link)