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Books > Children's & Educational > Leisure interests, hobbies & sport > Natural history & pets > Dinosaurs & the prehistoric world
Do you know for how many years the dinosaurs ruled the Earth? Or
how much the hefty Argentinosaurus weighed? Which dinosaur ran 144
per cent faster than Usain Bolt? And do you know how many hours
there were in a dinosaur say? Discover the answers to all these
questions and much, more more in Big Countdown: Dinosaurs. The Big
Countdown looks at popular topics and investigates the great many
numbers that make them fascinating. From the mind-bogglingly large
to smallest and most precious, this series helps us understand that
it's not just our days that are numbered. Perfect for
number-crunchers aged 9 and up.
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