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1:2,000,000-scale digital line graph (DLG) data

Author

Earth Science Information Center (U.S.)

Title

1:2,000,000-scale digital line graph (DLG) data [electronic resource] / U.S. Geological Survey, Earth Science Information Center.

Format

Online Resource CD-ROM

Published

Reston, VA : The Center, 1992.

Description

1 computer laser optical disc : col. ; 4 3/4 in.

Operating require

System requirements: IBM PC-XT or compatible computer, MS-DOS 3.1 or later, 640KB memory, EGA monitor and display card, CD-ROM reader using the Microsoft Extensions, Version 2.0 or later.

Notes

Title from disk label. "US GeoData"--Disk label. Digital line graph data covers 21 areas in the United States, Alaska, and the Aleutian and Hawaiian Islands. Shipping list no.: 91-0010-E.

Subject headings

Hydrology--United States--Databases. Transportation--United States--Databases. United States--Maps, Topographic--Databases.