Similar Items: Marking time :the epic quest to invent the perfect calendar
Topic: Calendar
- Calendar : humanity's epic struggle to determine a true and accurate year
- The story of clocks and calendars : marking a millennium
- The time book : a brief history from lunar calendars to atomic clocks
- Saint of the day : lives, lessons, and feasts
- How do you measure time?
- Marking time :the epic quest to invent the perfect calendar
