Digital line graphs from 1:24,000-scale maps.

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Book
Language:	English
Published:	Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 1986 [i.e. 1987]
Series:	Data users guide ; 1.
Subjects:	Digital mapping > Standards.

Evans: US Documents (Annex 5th floor)