Digital line graphs from 1:2,000,000-scale maps.
Contributors: Geological Survey (U.S.)
Edition: 2nd printing (rev.)
Series: Data users guide -- 3
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey
Published: 1990
Place of publication: Reston, Va
Language: eng
Number of pages: 70
Subjects: Digital mapping
Other titles: Digital line graphs from one:two million-scale maps.
Notes: "National Mapping Program technical instructions."--Cover.

"Data users guides 1-7 generally replace the Geological Survey circular 895."--P. [2] of cover.