Tripathi, Ashutosh, and Ajay Pal. “Environmental Pollution: Types and Conservation”. Anusandhaan - Vigyaan Shodh Patrika 5, no. 01 (October 10, 2017): 180-183. Accessed March 22, 2026. https://anushandhan.in/index.php/ANSDHN/article/view/1235.