Geology of the Dubuque North Quadrangle Iowa-Wisconsin-Illinois
By: by Jesse W. Whitlow and C. Ervin Brown.
Contributors: Brown, C. Ervin 1925-; Geological Survey (U.S.)
Series: U.S. Geological Survey bulletin -- 1123-C; Geology of parts of the Upper Mississippi Valley zinc-lead district
Publisher: U.S. Government Printing Office
Published: 1963
Place of publication: Washington, DC
Language: eng
Number of pages: 168
Notes: "Prepared in cooperation with the Iowa Geological Survey and the Wisconsin Geological and Natural History Survey".

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