RT Article T1 The self-concept of societally vulnerable and delinquent boys within the context of school and leisure activities JF Journal of adolescence VO 20 IS 6 SP 695 OP 705 A1 van Welzenis, Ingrid LA English YR 1997 UL https://krimdok.uni-tuebingen.de/Record/1639817689 K1 Delinquenz K1 Selbstkonzept K1 Jugendliche Straftäter K1 Schulversagen