01149cam a2200277 4500 71440358 TxAuBib 910404s1991||||||||||||||||||||||||und|u 9116713/AC 9781560062080 lib. bdg. $15.95 1560062088 lib. bdg. $15.95 TxAuBib BRACKIN, A. J. Clocks : Chronicling Time / by A.J. Brackin. San Diego, CA : Lucent Books, 1991. 96 p. : ill. (some col.) ; 26 cm. Encyclopedia of discovery and invention, The Encyclopedia of discovery and invention Includes bibliographical references (p. 87-90) and index. Examines early concepts of time; describes devices for measuring time and the improvements in their technology; and discusses how measured time has shaped our concepts of work and leisure. 20020423. CLOCKS AND WATCHES. Time. The Encyclopedia of discovery and invention. Encyclopedia of discovery and invention.