erg.usgs.gov
Gives a brief overview of how a GIS is used, some of the theory behind how it operates, as well as a discussion of various applications.
URLs from erg.usgs.gov:
URL: http://erg.usgs.gov/isb/pubs/gis_poster URL: http://erg.usgs.gov
Queries:
- satellite photographs
- hawaii in relation to north america
- coast to coast distance of united states
- forest symbols
- elevations
- geographic elevations
- united states mountain range map
- medium sized landform maps
- satellite views
- topographic maps
- united states map
- arizona city elevations.
- sanborn fire maps nassau county ny
- topographic map symbols
- aerial maps
- river elevations above sea level
- physical map of united states
- u.s states elevations
- us map highways
- florida elevations
- more...