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Preview The diffusion of maize to the southwestern United States and its impact pdf file

Dec 15, 2009 ... Archaeology, 2500 University Drive Northwest, University of Calgary, Calgary, Alberta, Canada T2N 1N4 ... early agriculture migration US Southwest Mesoamerica Uto-Aztecan ... Basin of western North America to Cen- ..... beginning of the drier middle Holocene ..... evant to the issues at hand, in the north-.

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