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occupational health consultancy |
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occupational safety consultancy |
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occupational therapy |
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off-site data backup |
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office machines and equipment installation, maintenance and repair |
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office machines and equipment rental* |
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offset printing |
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oil prospecting |
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oil-field surveys |
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oil-well testing |
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online advertising on a computer network |
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online banking |
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online banking services rendered in virtual environments |
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online ordering services in the field of restaurant take-out and delivery |
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online publication of electronic books and journals |
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online retail services for downloadable and pre-recorded music and movies |
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online retail services for downloadable digital music |
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online retail services for downloadable ring tones |
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online retail services for downloadable virtual clothing |
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online social networking services |
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opening of security locks |
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operating canal locks |
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opinion polling |
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optical glass grinding |
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opticians' services |
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optometry services |
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orchestra services |
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organization of animal racing events |
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organization of balls |
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organization of competitions [education or entertainment] |
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organization of cosplay entertainment events |
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organization of electronic sports competitions |
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organization of exhibitions for commercial or advertising purposes |
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organization of exhibitions for cultural or educational purposes |
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organization of fashion shows for entertainment purposes |
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organization of fashion shows for promotional purposes |
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organization of lotteries |
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organization of monetary collections |
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organization of political meetings |
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organization of religious meetings |
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organization of shows [impresario services] |
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organization of sports competitions |
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organization of swingers' parties |
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organization of trade fairs |
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orthodontic services |
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outdoor advertising |
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outsourced administrative management for companies |
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outsourcing services [business assistance] |
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