Techniques of Forced Entry for Locksmiths and Law EnforcementForced entry is used when conventional locksmithing techniques are either impossible or impractical, and this is a manual on how it's done. Written with the locksmithing student, professional locksmith, and law enforcement agent in mind, it covers just about every area in which forced entry might be necessary: houses, buildings, automobiles, office equipment, surreptitious entry and espionage locksmithing. 5 1/2" x 8 1/2", 41 pgs, and softcvr.