The master locksmith reference book ...
Subtitle: A handbook for locksmiths ...
By: by William H. Hassel, jr. ... [and] Charles Courtney ...
Contributors: Hassel, William H., Jr., author; Courtney, Charles, author
Publisher: American Association of Master Locksmiths
Published: 1931
Place of publication: New York
Language: eng
Subjects: Locks and keys