Citation | Ali, S., A.U. Rahman and S. Ali. 2022. Spatio-temporal expansion of built-up areas and its impact on farmland and food security of Peshawar Valley, Pakistan. Sarhad Journal of Agriculture, 38(4): 1260-1272. DOI | https://dx.doi.org/10.17582/journal.sja/2022/38.4.1260.1272