USGS digital cartographic data standards: digital line graphs from 1:24,000 scale maps.  by W.R. Allder and A.A. Elassal.
Contributors: Allder, W.R.; Elassal, A.A.
Publisher: Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 79
Subjects: Digital mapping - Standards
Notes: 11