RT Book T1 School security: how to build and strengthen a school safety program A1 Timm, Paul LA English PP Amsterdam Heidelberg u.a. PB Butterworth-Heinemann (Elsevier) YR 2015 UL https://krimdok.uni-tuebingen.de/Record/1611336562 CN 371.782 SN 9780124078116 K1 School Violence : Prevention K1 Education : Social aspects K1 USA : Schule : Sicherheitsmaßnahme