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http://www.infopost.com/gis/index.html (World Wide Web Directory, ~04/1995)

GIS (Geographic Information Systems)

GRASS Database Development
Yuma Proving Grounds, AZ.

Index:

Scope
Application
USGS 7.5 Quadrant Map (32)
Digital Terrain Model and Roads
DTM and Hydrography
Aspect
Combination of 16 quad DTM
Aspect 16 quad