RT Book T1 Identifying Cost-Effective Security Barrier Technologies for K-12 Schools: An Interdisciplinary Evaluation A1 Foley, Tom 1929-2013 LA English PP Erscheinungsort nicht ermittelbar PB Embry-Riddle Aeronautical University YR 2023 UL https://krimdok.uni-tuebingen.de/Record/191257926X