00588naa#a2200193#i#450# EN\\bibl\4410 20241218231255.3 2308-8877 20141207b2014####ek#y0engy0150####ca RUS RU Methods of cleaning waste oils Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 4 с. Journal article local Tupotilov N. Ostrikov V. Kornev A. zh-szf.ru