SCIENCE
Harrison, David L.

Mammoth Bones and Broken Stones: The Mystery of North America's First People

(4) 4-6 Illustrated by Richard Hilliard. Harrison guides readers through the chronology of scientific explanations for the origins and migration of humans into North America. For each archaeological find he presents the evidence it uncovered; scientists who contributed to our knowledge of early humans are also introduced. Photographs and diagrams as well as artistic renderings of what prehistoric life may have been like illustrate the occasionally choppy text. Bib., glos., ind.

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