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MLRAs

• 57 Northern Minnesota Gray Drift
• 88 Northern Minnesota Glacial Lake Basins
• 90 Central Wisconsin and Minnesota Thin Loess and Till
• 91 Wisconsin and Minnesota Sandy Outwash
• 92 Superior Lake Plain
• 93 Superior Stony and Rocky Loamy Plains and Hills
• 94A Northern Michigan and Wisconsin Sandy Drift
• 94B Michigan Eastern Upper Peninsula Sandy Drift
• 102A Rolling Till Prairie
• 102B Loess Uplands and Till Plains
• 103 Central Iowa and Minnesota Till Prairies
• 104 Eastern Iowa and Minnesota Till Prairies
• 105 Northern Mississippi Valley Loess Hills
• 107 Iowa and Missouri Deep Loess Hills
• 108 Illinois and Iowa Deep Loess and Drift
• 109 Iowa and Missouri Heavy Till Plain