| item | description | category | filter | more on... |
| UKN | ?st?edn? KNihovna | Edu./Universities |
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| UKN | United Kingdom Navy | Governmental/Military |
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| UKN | United Kingdom Navy | Governmental/US Gov. |
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| UKN | Unknown | Governmental/NASA |
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| UKN | Unknown | Governmental/US Gov. |
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| UKN | Unknown | Governmental/Military |
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| UKN | Waukon Municipal Airport, Waukon, Iowa USA | Regional/Airport Codes |
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