TY  - BOOK
AU  - Purpura,Philip P.
TI  - Security: an introduction 
SN  - 9781420092837 (hbk.)
PY  - 2011///
CY  - Boca Raton, Fl.
PB  - CRC Press
KW  - Private security services
KW  - Crime prevention
KW  - Security systems
KW  - Private security
N1  - Includes bibliographical references and index
ER  -