Merrill, William L.; Hard, Robert J.; Mabry, Jonathan B.; Fritz, Gayle J.; Adams, Karen R.; Roney, John R.; MacWilliams, A. C.
(2009)
Our understanding of the initial period of agriculture in the southwestern United States has been transformed by recent discoveries that establish the presence of maize there by 2100 cal. B.C. (calibrated calendrical years ...