RT Article T1 The role of peer support in helping the victims of bullying in a schoolwith high levels of aggression JF School psychology international VO 21 IS 1 SP 79 OP 95 A1 Cowie, Helen A1 Olafsson, Ragnar LA Undetermined YR 2000 UL https://krimdok.uni-tuebingen.de/Record/1639612483 K1 Aggression K1 Schule