00524naa#a2200181#i#450# EN\\bibl\11538 20240426074053.5 1995-042X 20160516b2016####ek#y0engy0150####ca RUS RU Development of youth tourism in Russia Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 12 с. Journal article local Konovalova Elena Kosareva Natalya philosoph.editorum.ru