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Hopewell Archaeology: The Chillicothe Conference. David S. Brose and N'Omi Greber, editors. Mid-Continental Journal of Archaeology Special Paper Number 3, The Kent State University Press, Kent, Ohio, 1979. xiv + 309 pp., illus., biblio. (paper). - Volume 47 Issue 2
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Olaf H. Prufer (1982) studied this question.
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