00473naa#a2200169#i#450# EN\\bibl\4140 20240913200236.5 1995-042X 20141202b2014####ek#y0engy0150####ca RUS RU The water tourism cluster development Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 9 с. Journal article local Puchkin Aleksey zh-szf.ru