| Label | Vocabulary | Concept | Subdivision | Identifier | |
|---|---|---|---|---|---|
| 1. | Inspection | LC Subject Headings (LCSH) |
General Subdivision | sh00006257 | |
| 2. | Speed | LC Subject Headings (LCSH) |
General Subdivision | sh2001008909 | |
| Velocity | |||||
| 3. | Equipment and supplies | LC Subject Headings (LCSH) |
General Subdivision | sh00005850 | |
| Supplies ; Apparatus and supplies ; Apparatus ; Apparatus and equipment | |||||
| 4. | Climatic factors | LC Subject Headings (LCSH) |
General Subdivision | sh00007749 | |
| Effect of climatic changes on ; Effect of climate on | |||||
| 5. | Law and legislation | LC Subject Headings (LCSH) |
General Subdivision | sh99004848 | |
| 6. | Transportation | LC Subject Headings (LCSH) |
General Subdivision | sh2001008994 | |
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