['GRADUAL CHANGES IN SNOW PEAKS IN UPPER INDUS BASIN, PAKISTAN: A GOOGLE EARTH BASED REVIEW'] - Asim Qayyum Butt; Donghui Shangguan; Li Da; Amjad Ali Khan; Yulong Tan; Muhammad Ahsan Mukhtar; Ali Muhammad; Muhammad Afzal; Faizan Khalid Butt; Liaqat Ali (Journal of Mountain Area Research)