Purpura, Philip P. Security and loss prevention : an introduction / Philip Purpura. - 5th ed. - Amsterdan : Burlington, Mass. : Elsevier ; Butterworth-Heinemann, 2008. - xxvii, 564 p. : ill. ; 27 cm. Includes bibl. references and index. ISBN: 9780123725257(hpb) Subjects--Topical Terms: Busienss lossess--Prevention.Private security services.Security systems. Dewey Class. No.: 658.473 / P976 2008