00590naa#a2200193#i#450# EN\\bibl\1348 20240521103113.2 1995-042X 20140120b2014####ek#y0engy0150####ca RUS RU On Improving the Eco-Efficiency of Wastewater Treatment Technologies Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 8 с. Journal article local Borisova Oksana Shubov Lazar Doronkina Irina service-rusjournal.editorum.ru