| Label | Vocabulary | Concept | Subdivision | Identifier | |
|---|---|---|---|---|---|
| 1. | Location | LC Subject Headings (LCSH) |
General Subdivision | sh2002011429 | |
| 2. | Seasonal variations | LC Subject Headings (LCSH) |
General Subdivision | sh00007943 | |
| 3. | Technological innovations | LC Subject Headings (LCSH) |
General Subdivision | sh2001009095 | |
| Innovations, Technological | |||||
| 4. | Prices | LC Subject Headings (LCSH) |
General Subdivision | sh2002006518 | |
| 5. | Law and legislation | LC Subject Headings (LCSH) |
General Subdivision | sh99004848 | |
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