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Dinosaurs and Prehistoric Animals
Dinosaurs and Prehistoric Animals
Author: Graham Wellfare B Sc
Prehistoric Time: It is easier to talk about the passing of millions of years than it is to imagine how vast these long spans of time really are. In order to see how the various ages of the Earth compare with each other, scientists who study rocks and fossils, called geologists, sometimes use what is called a geological clock. — This is how a geo...  more »
ISBN: 327739
Publication Date: 1978
Pages: 57
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Publisher: Modern Promotions
Book Type: Hardcover
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