“Physico-Chemical Study of Water in Singrauli District, Madhya Pradesh ” (2025) Shodh Utkarsh, 3(10), पृ. 61–63. पर उपलब्ध: https://shodhutkarsh.com/index.php/s/article/view/270 (अंतिम उपयोग: 15 जून 2026).