Locks & keys.
Title:
Locks & keys.
Personal Author EPSB:
Summary:
Traces the history of locks and keys from ancient times to the present, describing the development of increasingly complex and pick-proof locks and how they work.
Year Published:
1980
Physical Description:
[32] p.; ill. (some col.)
Reading Grade level:
4.2.
Grade Interest level:
K-3.
Subject:
ISBN:
9780690040586
Publisher:
New York : Crowell, c1980.
