Most Popular Papers *
Chemistry of Clays
J. B. Weems
History of Coal Mining In Iowa & Coal Statistics
James H. Lees and S. W. Beyer
Flora Northern Iowa Peat Bogs
L. H. Pammel
Petroleum and Natural Gas in Iowa
Jesse V. Howell
Trilobites of Iowa and some Related Paleozoic Forms
Otto Theodore Walter
The Stratigraphy and Paleontology of the Maquoketa Shale of Iowa, Pt. 1
Harry Stephen Ladd
Altitudes in Iowa
James H. Lees
Lead and Zinc Deposits of Iowa
A. G. Leonard
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» Updated as of 05/20/13.