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Federal
High Energy Astrophysics Science Archive Research Center
National Aeronautics and Space Administration —
The High Energy Astrophysics Science Archive Research Center (HEASARC) is the primary archive for NASA missions dealing with extremely energetic phenomena, from black... -
Federal
Simple Knowledge Organization System (SKOS) version of Materials Data Vocabulary
National Institute of Standards and Technology —
A version of the Materials Data Vocabulary structured as Simple Knowledge Organization System (SKOS). The XML was originally created by the TemaTres software. This... -
Federal
NAL Agricultural Thesaurus and Glossary
Department of Agriculture —
The NAL Agricultural Thesaurus (NALT) was first released by the National Agricultural Library in 2002, with in-depth coverage of agriculture, biology, and related...