00543naa#a2200181#i#450# EN\\bibl\14702 20240514100231.2 1999-5644 20161219b2016####ek#y0engy0150####ca RUS RU Student volunteering as a mechanism for social projecting Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 5 с. Journal article local Malakhova Viktoriya Timofeeva Sofiya rguts.editorum.ru