Yuldashev Narbek Khudainazarovich, Khurmamatov Abdugoffor Mirzabdullaevich, & Khudaynazarov Shokhrukhbek Narbek ugli. (2021). Study of Physico-Chemical properties of Oil Sludge. International Journal on Integrated Education, 4(3), 281-286. https://doi.org/10.17605/ijie.v4i3.1425