Digital line graphs from 1:24,000-scale maps
By: by William R. Allder and Atef A. Elassal
Contributors: Elassal, Atef A; Geological Survey (U.S.)
Series: USGS digital cartographic data standards; Geological Survey circular -- 895-C
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1984
Place of publication: Reston, Va
Language: eng
Number of pages: 79
Subjects: Map scales; Digital mapping -- Standards
Notes: "National Mapping Program"--Cover

"US GeoData"--Cover