00584naa#a2200193#i#450# EN\\bibl\1349 20250125080218.6 1995-042X 20140120b2014####ek#y0engy0150####ca RUS RU Efficiency Enhancement Potential of Urban Sanitation as a Public Utility Subsector Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 10 с. Journal article local Borisova Oksana Shubov Lazar Doronkina Irina zh-szf.ru