RT Article T1 Students who carry weapons to high school JF Journal of adolescent health VO 24 IS 5 SP 340 OP 348 A1 Simon, Thomas R. A2 Crosby, Alex E. A2 Dahlberg, Linda L. LA English YR 1999 UL https://krimdok.uni-tuebingen.de/Record/1639669531 K1 Waffenbesitz K1 Schule K1 USA