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uao
abbr.
stresses
abbr.
unexplained aerial object
UAO
abbr.
abbr.
Urban Automatic Office
abbr., astronaut.
Uppsala Astronomical Observatory
(Sweden)
abbr., earth.sc.
upper-air observation
abbr., ed., scient.
University Architect's Office
;
University Assessment Office
;
University of Arizona Observatories
abbr., el.
upper air observation
abbr., med.
Upper Airway Obstruction
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