Farmanov, Behzod Ilhomovich, and Abbos Mamatqulov. “On the Basis of Secondary Materials to the Study of the Important Properties of Polymer Waste”. Excellencia: International Multi-Disciplinary Journal of Education (2994-9521), vol. 2, no. 1, Jan. 2024, pp. 343-5, https://doi.org/10.5281/.