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Northern Prairie Wildlife Research Center

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Classification of Natural Ponds and Lakes
in the Glaciated Prairie Region

Plate 30


gif -- Tillage Ponds (T-4) in Cultivated Cropland
Plate 30. Tillage ponds (T-4) in cultivated cropland. Indicator plant species were not present. June 14, 1968, Barnes County, N. Dak.


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