00599naa#a2200169#i#450# EN\\bibl\17273 20240502135256.4 1995-0411 20170628b2017####ek#y0engy0150####ca RU Tourism and service in the historical cities: current challenges Journal article CHERKIZOVO Russian State University of Tourism and Service 2017 1 с. Journal article local Туристско-экскурсионное обслуживание. 71.37 grnti Afanasev Oleg Evgen'evich rguts.editorum.ru