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Par Collection Par Auteur- MORAN, S. R. (1)
- CLAYTON, L. (1)
- 1982 (1)
- of the confusion disappears. However, because of the scarcity of wood dates, only four of the sixteen identified fluctuations ar accurately dated: an advance into Iowa about 14,000 to 13,500 BP, an advance into South Dakota and Iowa about 12,300 BP, an advance
- 1982