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You searched for: Genre Geospatial data Remove constraint Genre: Geospatial data Creator United States Geological Survey (USGS) Remove constraint Creator: United States Geological Survey (USGS) Publisher State of Pennsylvania Remove constraint Publisher: State of Pennsylvania Public/Restricted Public Remove constraint Public/Restricted: Public Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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9. Chesapeake Bay Watershed Land Cover Data Series 1992

1992. United States Geological Survey (USGS). To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...
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10. Chesapeake Bay Watershed Land Cover Data Series 1984

1984. United States Geological Survey (USGS). To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...