RT Article T1 The preschool behavior questionnaire: a useful index of behavior problems in elementary school-age children JF Canadian journal of behavioural science VO 19 IS 1 SP 86 OP 100 A2 Rubin, Kenneth H. LA English YR 1987 UL https://krimdok.uni-tuebingen.de/Record/1628236116 K1 Verhaltensstörungen