00937cam a2200253 4500 298633212 TxAuBib 20030318120000.0 020205s2002||||||||||||||||||||||||eng|u 2002001954 9780807579398 hardcover 0807579394 hardcover 9780807579404 pbk. 0807579408 pbk. DLC DLC DLC KyLxBWI ICrlF TxAuBib Wells, Robert E. How do you know what time it is / Robert E. Wells. Morton Grove, Ill. : A. Whitman, 2002. [32] p. : col. ill., col. maps ; 19 x 27 cm. Purchased by the DCLS Foundation Collection Enhancement Campaign of 2001. An account of the history of measuring time from the Stone Age to the present. 20030404. Time measurements Juvenile literature.