How Do You Know What Time It Is?Book - 2002
What would life be like with no clocks and no calendars? How would you know when to get up in the morning? Long, long ago, all people could do was watch the sun and moon and try to figure things out. Eventually, they made simple clocks like sundials.
Publisher: Morton Grove, Ill. : Albert Whitman, c2002.
Branch Call Number: 529.7 W456
Characteristics:  p. : col. ill.