Subject | • | Geology -- Iowa | [X] | | • | Geology -- Minnesota | [X] | | • | Geology -- Wisconsin | [X] |
| | Book | Save | | 1 | Title: | Letter of the Secretary of the Treasury, communicating a report of a geological reconnoissance of the Chippewa Land District of Wisconsin, and the northern part of Iowa
| | | | Creator: | Owen, David Dale, 1807-1860 | | | | | United States General Land Office. | | | | Publication: | s.n, Washington, D.C,1848] | | | | Call #: | QE73 O97L | | | | Extent: | 134 p., [76] p. of plates : ill., maps ; 23 cm. | | | | Subjects: | Geology -- Wisconsin | Geology -- Iowa | Geology -- Minnesota
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