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?? ???? ?????? ??? ??????? (?? ??? ????) ?? ??? ????? ?? ??????? (??? ????? ??????). ??? ???? ≪??????≫ ??? ???? ≪??????≫. [1]

????? ?????? ???? ???? ?? ????? ?????? ??? ??? ????? (?? ????????) ?? ??? ????????. ?? ???????? ??? ?????? ??? ??????? ???? ??? ?????? ?????? ??????? ?? ??? ????? ??? ???? ????? ?????? ??????. [2] ????? ?????? ?????? ??? ??????? ??? ???? ????. [1] ????? ?? ??????? ≪??? ?? ??? ????? ???????? ?? ????? ???? ????≫ [3] ??? ?????? ?????? ??? ??? ???? ?????? ?? ??????? ????? ?? ??????? ????????? ???. [1] ??? ???? ?? ??????? ≪?? ??? ?????? ??????? ?????????? ??????? ?????? ????????≫. [3]

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  1. ^ ? ? ? Sawhill? Isabel V.? Morton? John E. (???? 2007). "Economic Mobility: Is the American Dream Alive and Well?" . ???? ???????? . ????? ?? ????? ?? 3 ???? 2012 . ???? ???? ?????? ?????? 2020 . {{ ??????? ??? }} : ???? ?? ??????? ??: |????? ??????= ( ?????? )
  2. ^ Consider the Evidence Lane Kenworthy [ ??? ????? ] ???? ?????? 2016-03-29 ?? Wayback Machine
  3. ^ ? ? Isaacs? Julia B. (?????? 2007). "Economic Mobility of Families Across Generations" . ????? ???????? . ????? ?? ????? ?? 9 ?????? 2011.

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