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Federal
NASA Thesaurus recent views
National Aeronautics and Space Administration —
The NASA Thesaurus contains the authorized NASA subject terms used to index and retrieve materials in the NASA Technical Reports Server (NTRS) and the NTRS Registered... -
Federal
Global Change Master Directory (GCMD) recent views
National Aeronautics and Space Administration —
The GCMD database holds more than 30,000 descriptions of Earth science data sets and services covering all aspects of Earth and environmental sciences. The mission of...