ENVIRONMENTAL FACTOR AS AN INDICATOR OF SUSTAINABILITY OF DEVELOPMENT OF LARGE URBAN SETTLEMENTS OF THE REPUBLIC OF TATARSTAN. Proc. YSU C: Geol. Geogr. Sci. [Internet]. 2026 Sep. 14 [cited 2026 Sep. 26];(Special Issue N1 (270):70. Available from: https://journals.ysu.am/proceedings-geol-geogr/article/view/vol60_2026_SI1_070