923 -- Administration of Human Resource Programs/923110 -- Administration of Education Programs
611 -- Educational Services/611430 -- Professional and Management Development Training
561 -- Administrative and Support Services/561312 -- Executive Search Services
561 -- Administrative and Support Services/561110 -- Office Administrative Services
541 -- Professional, Scientific, and Technical Services/541712 -- Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)
541 -- Professional, Scientific, and Technical Services/541618 -- Other Management Consulting Services
541 -- Professional, Scientific, and Technical Services/541613 -- Marketing Consulting Services
541 -- Professional, Scientific, and Technical Services/541612 -- Human Resources Consulting Services
541 -- Professional, Scientific, and Technical Services/541611 -- Administrative Management and General
Management Consulting Services
541 -- Professional, Scientific, and Technical Services/541519 -- Other Computer Related Services
541 -- Professional, Scientific, and Technical Services/541513 -- Computer Facilities Management Services
541 -- Professional, Scientific, and Technical Services/541511 -- Custom Computer Programming Services
541 -- Professional, Scientific, and Technical Services/541420 -- Industrial Design Services
541 -- Professional, Scientific, and Technical Services/541330 -- Engineering Services
541 -- Professional, Scientific, and Technical Services/541320 -- Landscape Architectural Services
531 -- Real Estate/531120 -- Leasers of Nonresidential Buildings (except Mini warehouses)
518 -- Data Processing, Hosting and Related Services/518210 -- Data Processing, Hosting, and Related Services
442 -- Furniture and Home Furnishings Stores/442110 -- Furniture Stores
423 -- Merchant Wholesalers, Durable Goods/423430 -- Computer and Computer Peripheral Equipment and Software Merchant Wholesalers
238 -- Specialty Trade Contractors/238390 -- Other Building Finishing Contractors