| item | description | category | filter | more on... |
| OUA | Office of Urban Affairs | Other/States-Local |
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| OUA | Ontario University Athletics | Edu./Universities |
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| OUA | Ontario University Athletics | Radio Stations |
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| OUA | Organisation de l'Unité Africaine | Regional/African |
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| OUA | Ouachita | Other/States-Local |
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| OUA | Ouagadougou, Burkina Faso | Regional/Airport Codes |
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