RAO

Definitions

(Abbreviation) Radio Astronomical Observation

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(Abbreviation) Rear Area Operations

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(Abbreviation) Recurrent Airway Obstruction

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(Abbreviation) Regimental Administrative Officer

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(Abbreviation) Registered Archaeological Organisation

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(Abbreviation) Russian Archives Online

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(Abbreviation) Response Amplitude Operators

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(Abbreviation) Regional Advisory Officers

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(Abbreviation) Retiree Activities Office

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