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GIS Data and Maps
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Databases
General Sources
Demographics
Environment and Climate
Historical Data
Biology
Non-georeferenced Maps
Web-based GIS/Interactive Map Tools
Citing Maps
Biology
Ocean Biodiversity Information System
OBIS is a global open-access data and information clearing-house on marine biodiversity for science, conservation, and sustainable development.
Gap Analysis Program
Land cover, predicted distribution for common vertebrate species, and land ownership/stewardship information for the entire United States.
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Non-georeferenced Maps >>