Cultural complexities before 5000 B. C. -- Cultural complexities 4000-1000 B. C. -- Cultural complexities 500-500 A. D. -- Cultural complexities 500-1300 A. D: The national atlas of the United States of America. United States Department of the Interior Geological Survey, Washington, D. C. 1970
Geological Survey (U.S.) ; Pecora, William T ; Gerlach, Arch C ; Overstreet, William B
Washington D.C 1300
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