Description of data files compiled for the Central Midwest Regional Aquifer-System Analysis / by John O. Helgesen and Cristi V. Hansen.
Uniform Title: | U.S. Geological Survey open-file report ;
89-42. |
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Main Author: | Helgesen, John O. |
Corporate Author: | Geological Survey (U.S.) |
Other Authors: | Hansen, Cristi V. |
Language: | English |
Published: |
Denver, Colo. :
Department of the Interior, U.S. Geological Survey : Books and Open-File Reports [distributor],
1989.
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Series: | U.S. Geological Survey open-file report ;
89-42. |
Subjects: | |
Physical Description: | 1 microfiche : negative, illustrations, maps. |
Format: | Government Document Microfilm Book |