RT Article T1 Economic hardship across the life course JF American sociological review VO 64 IS 4 SP 548 OP 569 A1 Mirowsky, John A1 Ross, Catherine E. LA English YR 1999 UL https://krimdok.uni-tuebingen.de/Record/1639749993 K1 Alter K1 Einkommen K1 Armut