RT Article T1 Regional origin and family stability in Northern cities: the role of context JF American sociological review VO 64 IS 1 SP 97 OP 112 A1 Tolnay, Stewart E. A2 Crowder, Kyle D. LA English YR 1999 UL https://krimdok.uni-tuebingen.de/Record/1639755454 K1 Migranten K1 Familienstabilität