Roper, C. A. <br/><br/>
Selections From The Complete Book Of Locks And Locksmithing 
/ C. A. Roper and Bill Phillips 
 - 3rd ed. 
 - Boston  Mcgraw Hill  [1991] 
 - 437 p.  : ill.  ; 24 cm. 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>9780070536746 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Locksmithing
<br/><br/><label>Dewey Class. No.: </label>683.32  / ROP