| Label | Dataset | Type | Subdivision | Identifier | |
|---|---|---|---|---|---|
| 21. | Automatic control |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh00007651 |
| Control, Automatic | |||||
| 22. | Air conditioning |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh99002244 |
| 23. | Lighting |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh00006206 |
| 24. | Transportation |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh2001008994 |
| 25. | Corrosion |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh99005345 |
| 26. | Collectors and collecting |
LC Subject Headings (LCSH) |
Topic SimpleType Authority |
General Subdivision | sh99005241 |
| Collecting of objects | |||||
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