5 Free Photos of Pre Columbian Cultures Of North America

historyhistoricalpopular science monthly illustrations/volume 43
PSM V43 D048 Topography of the exposed terrace of the finds
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PSM V43 D048 Ground layer cross section of paleolithic finds
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PSM V43 D046 Area map where paleolithic implements found
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PSM V43 D040 Section of the trenton gravel in which the implements were found
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PSM V43 D047 Newcomerstown terrace where paleolithic implements found
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