Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (8 total)

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Erosion in till and loess, Cass Township, Iowa, July 18, 1924
Kansan till, loess and Wisconsin till, Cass Township, Iowa, July 18, 1924
Nebraskan till, Nebraskan gumbotil and Kansan till, Douglas Township, July 24, 1924
Erosion in till and loess, Cass Township, Iowa, July 18, 1924
Kansan till, loess and Wisconsin till, Cass Township, Iowa, July 18, 1924
Nebraskan till, Nebraskan gumbotil and Kansan till, Douglas Township, July 24, 1924
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