GSDRAW and GSMAP system version 6.0 : graphics programs and utility programs for the IBM PC and compatible microcomputers, to assist compilation and publication of geologic maps and illustrations /

Bibliographic Details
Main Author:	Selner, G. I.
Corporate Author:	Geological Survey (U.S.)
Other Authors:	Taylor, Richard B. (Richard Bartlett)
Format:	Government Document Microform Book
Language:	English
Published:	Denver, Colo. : U.S. Dept. of the Interior, Geological Survey : [1989]
Series:	U.S. Geological Survey open-file report ; 89-373 A.
Subjects:	Computer graphics. Computer graphics > Computer programs. Digital mapping.

Description
Item Description:	"July, 1989." Microform.
Physical Description:	2 microfiches : negative, illustrations, maps.