Article
Authors: Samuel Calvin , Charles R. Keyes , H. Foster Bain , G. E. Patrick
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How to Cite: Calvin, S. , Keyes, C. R. , Bain, H. F. & Patrick, G. E. (1895) “Administrative Reports”, Iowa Geological Survey Annual Report. 4(1). doi: https://doi.org/10.17077/2160-5270.1318