00551naa#a2200181#i#450# EN\\bibl\10500 20240516022743.4 1993-7768 20160226b2016####ek#y0engy0150####ca RUS RU Methods of conducting a service audit at the regional level Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 12 с. Journal article local Platonova Natalya Vapnyarskaya Olga Igorevna rguts.editorum.ru