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Minnesota Geological Survey
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Thematic maps
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Minnesota
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1. Map showing peat deposits of Itasca County, Minnesota
1919. Minnesota Geological Survey. Scale not given (W 94°25ʹ00ʺ--W 93°03ʹ00ʺ/N 47°53ʹ00ʺ--N 47°01ʹ00ʺ). "Plate IV" in upper right corner. [From Bulletin No. 16, 1919, The Peat Deposi...