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DIGITAL DATA CROSS-REFERENCE

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TABULAR INFORMATION

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Major Category - Subdivision    |   References
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Elevation                       |
 - terrestrial                  | ORNL NGIC
                                |
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Geomorphic                      |
 - seismic                      | NGDC
                                |
 - soils                        | SCS
                                |
 - geology                      | NGDC
                                |
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Topological                     |
 - landuse/landcover            | USGS
                                |
 - political/census boundaries  | USGS USBC
                                |
 - hydrologic units             | USGS 
                                |
 - transportation               | USGS
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Automatically created on: Tue Mar 30 00:23:51 2004