Coleman (1973) Illinois State Geological Survey radiocarbon dates IV. Radiocarbon 15, p. 758 // Mickelson et al. (1983) The late Wisconsin glacial record of the Laurentide Ice Sheet in the United States. In: Wright (ed.) Late Quaternary Environments of the United States, p. 3-37 per Dalton et al. 2020-An Updated Radiocarbon-Based Ice Margin….

Coleman (1973) Illinois State Geological Survey radiocarbon dates IV. Radiocarbon 15, p. 758 // Mickelson et al. (1983) The late Wisconsin glacial record of the Laurentide Ice Sheet in the United States. In: Wright (ed.) Late Quaternary Environments of the United States, p. 3-37 per Dalton et al. 2020-An Updated Radiocarbon-Based Ice Margin….

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