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Dr. Johnson received her B.A. degree from Wesleyan University in Connecticut, and her Ph.D. in anthropology, with a concentration in archaeology, from the University of Iowa. Her dissertation research examined dietary change between two Native American villages in southeastern Iowa during the period 1600 BC - 1950 AD, through an examination of fatty acid residues extracted from pottery. Her fieldwork has covered the U.S., Great Britain and Poland.
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