Sanjeev Ajit, Mishra Naqvi, and Vinay Maneka. 2017. “A Study of the Heavy Metals and Their Level in the Solid and Liquid Waste in Uttarakhand State of India”. African Journal of Environmental Economics and Management 5 (1):303-11. https://elixirpublishers.in/index.php/ajeem/article/view/1040.