RT Article T1 Adolescent social networks: School, demographic, and longitudinal considerations JF Journal of adolescent research VO 11 IS 2 SP 194 OP 215 A1 Ennett, Susan T. A1 Bauman, Karl E. LA English YR 1996 UL https://krimdok.uni-tuebingen.de/Record/1639331824 K1 Jugendliche K1 Soziale Netzwerke