Guin , J. and Gupta, K. 2022. Urban Functionality and Sphere of Influence: A Case Study on Urban Centres of Darjeeling and Jalpaiguri District, West Bengal . RESEARCH REVIEW International Journal of Multidisciplinary. 7, 9 (Sep. 2022), 38–52. DOI:https://doi.org/10.31305/rrijm.2022.v07.i09.007.