RT Book T1 Safe schools: a security and loss prevention plan A1 Hylton, James Barry LA English PP Boston u.a. PB Butterworth-Heinemann YR 1996 UL https://krimdok.uni-tuebingen.de/Record/1611691117 CN 371.770973 SN 0750697598 K1 Schule : Sicherheitsplanung