DRG : Digital Raster Graphic Data /

DRG : Digital Raster Graphic Data /

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Bibliographic Details
Edition:	Ed. 1.
Imprint:	[Reston, Va. : The Survey, 1996- ]
Description:	computer laser optical discs ; 4 3/4 in.
Language:	English
Subject:	Digital mapping -- Databases. Topographic maps -- Databases. Cartography -- Automation -- Databases. Cartography -- Automation. Digital mapping. Topographic maps. United States -- Maps, Topographic -- Databases. United States. Databases. Topographic maps.
Cartographic data:	Scale differ
Format:	U.S. Federal Government Document
URL for this record:	http://pi.lib.uchicago.edu/1001/cat/bib/2490241

Hidden Bibliographic Details
Varying Form of Title:	Digital Raster Graphic Data
Other authors / contributors:	Geological Survey (U.S.)
Notes:	Title from disc label. "Mastered 1/96-<7/96> Text files in ASCII format. "TIFF PackBits compressed." Each CD-ROM includes the USGS topographic maps for a 1-degree cell. System requirements: IBM compatible PC with 80386 or higher; Microsoft Windows 3.1; Microsoft compatible pointing device (mouse); 16 MB of hard drive space; 4 MB of RAM (8 MB recommended); CD-ROM reader. Disk characteristics: CD-ROM.
Summary:	"Digital Raster Graphic (DRG) images of USGS standard series quadrangles cover systematically subdivided areas of latitude with formats ranging from 7.5- by 7.5-minutes to 1- by 2-degrees. DRG's of standard quadrangles range in scale from 1:20,000 to 1:250,000. DRG's coverages include the conterminous United States, Alaska, Hawaii, Puerto Rico and the Virgin Islands"--DRGP̲KG.TXT file.
Govt.docs classification:	I 19.128:

Regenstein, Room 370, Map Collection

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Holdings details from Regenstein, Room 370, Map Collection
Call Number:	CDRom G3700 svar .G4
c.1	Available Loan period: building use only Need help? - Ask a Librarian Notes: For holdings, see index map held with set.