518210

Data Processing, Hosting, and Related Services

519130

Internet Publishing and Broadcasting and Web Search Portals

519190

All Other Information Services

541330

Engineering Services

541360

Geophysical Surveying and Mapping Services

541511

Custom Computer Programming Services

541512

Computer Systems Design Services

541513

Computer Facilities Management Services

541519

Other Computer Related Services

541611

Administrative Management and General Management Consulting Services

541612

Human Resources Consulting Services

541614

Process, Physical Distribution, and Logistics Consulting Services

541618

Other Management Consulting Services

541690

Other Scientific and Technical Consulting Services

541712

Reseach and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)

541720

Research and Development in the Social Sciences and Humanities

541910

Marketing Research and Public Opinion Polling

541990

All Other Professional, Scientific, and Technical Services

561110

Office Administrative Services

561210

Facilities Support Services

561312

Executive Search Services

561410

Document Preparation Services

561421

Telephone Answering Services

561431

Private Mail Centers

561990

All Other Support Services

611420

Computer Training

611430

Professional and Management Development Training

611710

Educational Support Services