RT Book
T1 School security: how to develop and effective program for safe learning in elementary and secondary schools
A1 Blauvelt, Peter D.
A2 Vestermark, Seymour D.
LA English
PP College Park, Md
PB Institute for Reduction of Crime
YR 1977
UL https://krimdok.uni-tuebingen.de/Record/109738232X