Chajka Oksana Grygorivna. Ecological utilization of the used oils- Manuscript
: к.т.н. :
spec.. 21.06.01 - Екологічна безпека :
presented. 2007-12-07; popup.evolution: .;
Lviv Polytechnic National University. – ,
0408U000208.
Updated: 2026-11-08