9780382422324 | New Discovery, August 1, 1999, cover price $55.01 |
About this edition: Presents an historical overview of how time has been measured around the world, focusing on calendars, sundials, shadow clocks, longitude, biological clocks, and atomic clocks.
9781930643178 | Thameside Pr, August 1, 2001, cover price $27.10 |
About this edition: Presents an historical overview of how time has been measured around the world, focusing on calendars, sundials, shadow clocks, longitude, biological clocks, and atomic clocks.
9781575729701 | Heinemann/Raintree, July 1, 1999, cover price $25.36 |
About this edition: Explores the measurement of time, including days, weeks, months, and years, and introduces clocks and how to read them to determine seconds, minutes, and hours