Singh, . H. ., and S. . Goel. “SUB-REGIONAL POPULATION ANALYSIS OF UTTARAKHAND”. AGPE THE ROYAL GONDWANA RESEARCH JOURNAL OF HISTORY, SCIENCE, ECONOMIC, POLITICAL AND SOCIAL SCIENCE, vol. 3, no. 4, May 2022, pp. 52-62, https://agpegondwanajournal.co.in/index.php/agpe/article/view/130.