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Beschreibung

How many hours do you sleep? How many minutes does it take to eat your cereal? Learn how clocks and calendars help you tick off the seconds, hours, days, and years.

Dauer: 4 Minuten (00:04:02)
Veröffentlichungsdatum: 01.03.2013; Unabridged; Copyright Year: — Copyright Statment: —

• Jugendliteratur