Romaan Hayat Khattak, Hussain Ali, Ejaz Ur Rehman and Muhammad Ali Nawaz, 2020. Population Structure of Blue Sheep (Pseudios nayaur) in Shimshal Valley Gilgit-Baltistan Pakistan. Pakistan J. Zool., 52: 699-707. DOI: https://dx.doi.org/10.17582/journal.pjz/20180919050909