Postal Service, Local Messengers and Local Delivery, General Warehousing and Storage, Directory and Mailing List Publishers, All Other Publishers

Commercial and Institutional Building Construction, Electronic Computer Manufacturing, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufactur, Aircraft Manufacturing

All Other Publishers, Software Publishers, Engineering Services, Custom Computer Programming Services, Computer Systems Design Services

Commercial and Institutional Building Construction, Highway, Street, and Bridge Construction, Plumbing, Heating, and Air-Conditioning Contractors, Aircraft Manufacturing, Ship Building and Repairing