Khan, M. J. and Opdyke, N. D. (1987) “Magnetic-Polarity Stratigraphy of the Siwalik Group of the Shinghar and Surghar Ranges, Pakistan”, Journal of Himalayan Earth Sciences, 20(1), pp. 111-127. Available at: http://ojs.uop.edu.pk/jhes/article/view/1318 (Accessed: 29November2024).