Results of spirit leveling in Illinois, 1896 to 1908, inclusive / compiled by S.S. Gannett and D.H. Baldwin ; in cooperation with the Illinois State Geological Survey during 1905 to 1908, inclusive.
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| Corporate Authors: | , , |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
G.P.O.,
1910.
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| Series: | Bulletin (Geological Survey (U.S.)) ;
no. 421. |
| Subjects: |