Kumar, Satayendra, and Jyoti Rai. “TEMPORAL CHANGES IN CROP CONCENTRATION OF HARIDWAR DISTRICT”. International Journal of Research -GRANTHAALAYAH 8, no. 6 (June 29, 2020): 43–50. Accessed April 28, 2024. https://www.granthaalayahpublication.org/journals/granthaalayah/article/view/IJRG20_B06_3454.