You searched for: Access Public Remove constraint Access: Public Subject Geoscientific Information Remove constraint Subject: Geoscientific Information Subject Digital elevation models Remove constraint Subject: Digital elevation models Place New Jersey Remove constraint Place: New Jersey Place Maine Remove constraint Place: Maine Place Pennsylvania Remove constraint Place: Pennsylvania Year 1993 Remove constraint Year: 1993
1993. USGS National Center for EROS. The North America Shaded Relief data were derived from the GTOPO30 elevation data. GTOPO30 is a global digital elevation model (DEM) with a horizon... National Atlas of the United States.