R.N, Ushakov, Ruchkina A.V, Levin V.I, Zakharova O.A, Kostin Ya.V., and Golovina N.A. “Sustainability of Agro-Gray Soil to Pollution and Acidification, and Its Biodiagnostics”. International Journal of Engineering & Technology 7, no. 4.36 (December 9, 2018): 929–934. Accessed August 17, 2024. https://sciencepubco.com/index.php/ijet/article/view/24923.