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Object Oriented (Academic & Science » Electronics)

Object Oriented (Computing » General)

* Ochrana Ovzdusi (Computing » General)

* Objektorientierung (Computing » General)

* Over and Out (Internet » Chat)

* Ogden Air Logistics Center (Governmental » Suppliers)

* Other Orthogonal (Academic & Science » Mathematics)

* Official Observer (Governmental » United Nations)

* Orbitally Ordered (Academic & Science » Chemistry)

* Office of Origin (Governmental » FBI Files)

* Oakley, Incorporated (Business » NYSE Symbols)

* Oakwood Outlaws (Community)

* Optimistic Orators Toastmasters Club (Miscellaneous » Toastmasters)

* Orange Oatmeal (Miscellaneous » Food)

* Open Optionals (Community » Sports)