| item | description | category | filter | more on... |
| VSO | Very Stable Oscillator | Governmental/NASA |
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| VSO | Very Superior Old | Misc/Food |
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| VSO | Veterans Service Organization | Governmental/Military |
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| VSO | Voluntary Service Overseas | Governmental/US Gov. |
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| VSO | Voluntary Service Overseas | Medical/Veterinary |
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| VSO | Voluntary Service Overseas | Governmental/Military |
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