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OOTAOut of the Arena (robot wars)
OOTAOut of Thin Air
OOTAOut of the Ashes
OOTAWorkshop on Object-Oriented Technology and Applications (conference)
OOTAOklahoma Occupational Therapy Association (Oklahoma City, OK)
OOTAOrder of the Antelope (Oregon)
OOTAOhio Occupational Therapy Association, Inc. (Canal Winchester, OH)
OOTAOrder of the Arrow
OOTAOne of Those Afternoons
OOTAOut of Toon Army (Newcastle Eagles; UK)