00486naa#a2200169#i#450# EN\\bibl\1937 20250202214746.7 1995-0411 20140331b2014####ek#y0engy0150####ca RUS RU The newest comprehension of tourism as a system Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 14 с. Journal article local Aleksandrova Anna zh-szf.ru