North American Industry Classification System (NAICS)
488190 - Additional Support to Aviation
541511 - Custom Computer Programming Services
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541512 - Computer Systems Design Services
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541513 - Computer Facilities Management Services
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541519 - Other Computer Related Services
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541611 - Administrative Management and General Management Consulting Services
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541612 - Human Resources Consulting Services
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541614 - Process, Physical Distribution, and Logistics Consulting Services
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541720 - Research and Development in the Social Sciences and Humanities
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541990 - All Other Professional, Scientific, and Technical Services
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561210 - Facilities Support Services
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561320 - Temporary Help Services
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Standard Industrial Classification (SIC)
4512 - AIR TRANSPORTATION, SCHEDULED
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4899 - COMMUNICATION SERVICES, NEC
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7376 - COMPUTER FACILITIES MANAGEMENT
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8243 - DATA PROCESSING SCHOOLS |