| item | description | category | filter | more on... |
| RVO | Rabaul Volcano Observatory | Edu./Geology |
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| RVO | Rabaul Volcanological Observatory | Edu./Geology |
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| RVO | Reivilo, South Africa | Regional/Airport Codes |
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| RVO | Remediation Venture Office | Governmental/US Gov. |
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| RVO | Remediation Venture Office | Governmental/Military |
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| RVO | Royal Victorian Order | Misc/Awards & Medals |
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