| item | description | category | filter | more on... |
| NAICS | North American Industry Classification System | Business/General |
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| NAICS | North American Industry Classification System | Governmental/US Gov. |
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| NAICS | North American Industry Classification System | Governmental/Military |
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| NAICS | North American Industry Classification System | Governmental/NASA |
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| NAICS | North American Industry Classification System | Other/Transportation |
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