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6by Weidman, Samuel, 1870-, Weidman, Samuel, 1870-, Weidman, Samuel, 1870-, Weidman, Samuel, 1870-1945“...Soil series (Madison, Wis.) ;...”
Published 1911
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20by Hole, Francis Doan, 1913-, Hole, Francis Doan, 1913-, Beatty, Marvin T., Lee, Gerhard Bjarne, 1917-“...Soil series (Madison, Wis.) ;...”
Published 1976
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