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Table showing variation in the number of rows of seeds in maize cobs for Woodland through Late Prehistoric sites in the midwest.
Hall, Robert 1991. Identity and Interaction Models of Cahokia Mississippian. In Cahokia and the Hinterlands, edited by T. E. Emerson and R. B. Lewis, pp 3-34. University of Illinois Press. Table 1.1, p.14
Image courtesy of the Board of Trustees of the University of Illinois.