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Lack of linguistic support for Proto-Uto-Aztecan at 8900 BP.
Brown CH. Brown CH. Proc Natl Acad Sci U S A. 2010 Mar 16;107(11):E34; author reply E35-6. doi: 10.1073/pnas.0914859107. Epub 2010 Mar 15. Proc Natl Acad Sci U S A. 2010. PMID: 20231478 Free PMC article. No abstract available.