| item | description | category | filter | more on... |
| OEL | Occupational Exposure Limit | IT/Security |
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| OEL | Office of Export Licensing | Business/General |
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| OEL | Ontario Electrical League | Business/Firms |
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| OEL | optional endorsement line | Misc/USPS |
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| OEL | Orel, Russia | Regional/Airport Codes |
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| OEL | Original Equipment List | Governmental/Military |
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