00531naa#a2200181#i#450# EN\\bibl\6906 20240521171804.2 1995-0411 20150904b2015####ek#y0engy0150####ca RUS RU Noble estates of the Tula region as tourism objects Journal article CHERKIZOVO Russian State University of Tourism and Service 2015 7 с. Journal article local Ponomareva Irina Yur'evna Tankieva Tamara naukaru.ru