| Label | Dataset | Type | Subdivision | Identifier | |
|---|---|---|---|---|---|
| 21. | History--21st century |
LC Subject Headings (LCSH) |
ComplexSubject ComplexType Authority |
General Subdivision | sh2002006168 |
| 22. | Study and teaching |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh2001008697 |
| 23. | Library resources |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh2002006396 |
| 24. | Information services |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh00006253 |
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