RT Article T1 The effects of single-mother families and nonresident fathers on delinquency and substance abuse in black and white adolescents JF Journal of marriage and family VO 58 IS 4 SP 884 OP 894 A1 Thomas, George A2 Farrell, Michael P. A2 Barnes, Grace M. LA German YR 1996 UL https://krimdok.uni-tuebingen.de/Record/1639157514 K1 Jugenddelinquenz K1 Alleinerziehende Mütter