Kydyrova, Aidana, Amanbek Zandybay, Turgut Tüzün Onay, Aikenova Nuriya, and Sagnayeva Assyltas. 2025. “Regional Variations and Geostatistical Mapping of Soil Contamination by Heavy Metals in Astana City”. International Journal of Innovative Research and Scientific Studies 8 (6):209-22. https://doi.org/10.53894/ijirss.v8i6.9527.