| Label | Dataset | Type | Subdivision | Identifier | |
|---|---|---|---|---|---|
| 1. | Ability testing | LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh99001251 |
| 2. | Provincialisms | LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh99005271 |
| 3. | Variation | LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh99005083 |
| 4. | Dialects | LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh99005549 |
| 5. | Contraction | LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh99005374 |
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