Early isotopic evidence for maize as a staple grain in the Americas

Douglas J. Kennett, Keith M. Prufer, Keith M. Prufer, Brendan J. Culleton, Richard J. George, Mark Robinson, Willa R. Trask, Gina M. Buckley, Emily Moes, Emily J. Kate, Thomas K. Harper, Lexi O'Donnell, Erin E. Ray, Ethan C. Hill, Asia Alsgaard, Christopher Merriman, Clayton Meredith, Heather J.H. Edgar, Jaime J. Awe, Said M. Gutierrez