Blackhawk quadrangle, Illinois--Iowa : 7.5-minute series /

Blackhawk quadrangle, Illinois--Iowa : 7.5-minute series /

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Bibliographic Details
Corporate author / creator:Geological Survey (U.S.), cartographer.
Imprint:[Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010-
Description:1 online resource (maps) : color
Language:English
Subject:
Jo Daviess County (Ill.) -- Maps.
Carroll County (Ill.) -- Maps.
Jackson County (Iowa) -- Maps.
Illinois -- Carroll County.
Illinois -- Jo Daviess County.
Iowa -- Jackson County.
Topographic maps.
Maps.
Topographic maps.
Cartographic data:Scale 1:24,000 ; universal transverse Mercator projection. (W 90°15ʹ00ʺ--W 90°07ʹ30ʺ/N 42°15ʹ00ʺ--N 42°07ʹ30ʺ).
Format: E-Resource Map U.S. Federal Government Document
URL for this record:http://pi.lib.uchicago.edu/1001/cat/bib/8118286
Hidden Bibliographic Details
Varying Form of Title:Filing title: Blackhawk, IL-IA
Frequency:Irregular
Date / volume:Began with 2010.
Notes:Relief shown by contours and spot heights.
Includes location map and index to adjoining quadrangles.
Description based on: 2010; title from title screen (viewed Nov. 19, 2013).
Latest issue consulted: 2015 (viewed on Apr. 13, 2016).
GPO item no.:0619-M-13 (online)
Govt.docs classification:I 19.81:42090-B 2-TF-024/

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