00595naa#a2200193#i#450# EN\\bibl\4410 20250502182107.5 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. anni.editorum.ru