00595naa#a2200181#i#450# EN\\bibl\17280 20260120194029.2 1995-0411 20170628b2017####ek#y0engy0150####ca RUS RU THE PROBLEMS OF SUSTAINABLE DEVELOPMENT OF HISTORIC CITIES Journal article CHERKIZOVO Russian State University of Tourism and Service 2017 6 с. Journal article local Туристско-экскурсионное обслуживание. 71.37 grnti KHWAJA Ayham N. zh-szf.ru