Reply to Hill and Brown: Maize and Uto-Aztecan cultural history Merrill, William L. ; Hard, Robert J. ; Mabry, Jonathan B. ; Fritz, Gayle J. ; Adams, Karen R. ; Roney, John R. ; MacWilliams, A. C. Abstract Publication: Proceedings of the National Academy of Science Pub Date: March 2010 DOI: 10.1073/pnas.1000923107 Bibcode: 2010PNAS..107E..35M