Locks and Keys

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locks and keys by gail gibbons

A history and explanation of the basic lock and key combination that is the major technical foundation of property security, from the first Egyptian wooden lock to today's time lock.---from the publisher

32 pages                      978-0690040586                              Ages 5-8

Keywords:  locks, keys, history, how things work, informational picture book, part of a series,  5 year old, 6 year old, 7 year old, 8 year old

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