The Library of Congress > Linked Data Service
  Label Vocabulary Concept Subdivision Identifier
1. Protection LC Subject Headings (LCSH)
Topic General Subdivision sh00005022
2. Classification LC Subject Headings (LCSH)
Topic General Subdivision sh2002012034
3. Research LC Subject Headings (LCSH)
Topic General Subdivision sh2002006576
4. Transportation LC Subject Headings (LCSH)
Topic General Subdivision sh2001008994


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