00486naa#a2200181#i#450# EN\\bibl\13960 20240704075004.4 2071-2367 20161031b2016####ek#y0engy0150####ca RUS RU Dynamics of the social structure of the Russian middle class Journal article Moscow RANEPA 2016 10 с. Journal article local Alekseenok Anna Galtsova Anna zh-szf.ru