ECOLOGICAL AND GEOCHEMICAL CHARACTERISTICS OF SPRINGS IN URBAN AREAS: FROM LOCAL SAMPLING TO RISK ASSESSMENT: (the case study in North-East of Moscow district). Proceedings of the YSU C: Geological and Geographical Sciences, Yerevan, Armenia, n. Special Issue N1 (270), p. 36, 2026. DOI: 10.46991/PYSUC.2026.SI1.036. Disponível em: https://journals.ysu.am/proceedings-geol-geogr/article/view/vol60_2026_SI1_036. Acesso em: 20 sep. 2026.