| item | description | category | filter | more on... |
| USGS | United States Geological Survey | Governmental/Military |
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| USGS | United States Geological Survey | Governmental/US Gov. |
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| USGS | United States Geological Survey | Other/Transportation |
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| USGS | United States Geological Survey | Governmental/NASA |
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| USGS | United States Geological Survey | Edu./Universities |
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| USGS | United States Geological Survey | Edu./Geology |
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| USGS | United States Geological Survey | Edu./Ocean Science |
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| USGS | United States Geological Survey | Edu./Physics |
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