Zakir, S. N., Ali, L. and Khattak, S. A. (2013) “Variation in major element oxide with time in the soils of Peshawar Basin: their comparison with the normal agricultural soil ”, Journal of Himalayan Earth Sciences, 46(2), pp. 35-48. Available at: http://ojs.uop.edu.pk/jhes/article/view/1669 (Accessed: 6January2025).