Human / producer and director, Gwyn Williams. Life / director, Gwyn Williams -- Human / producer and director, Gwyn Williams.
Summary:
Examines the natural forces that formed the continent of North American. Recounts ways in which the continent's unique geology affected indigenous biology, human evolution, and civilizaton.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.