541219
Other Accounting Services
541330
Engineering Services
541511
Custom Computer Programming Services
541512
Computer Systems Design Services
541519
Other Computer Related Services
541611
Administrative Mgmt. & General Mgmt. Consulting Services
541612
Human Resources Consulting Services
541618
Other Management Consulting Services
541690
Other Scientific and Technical Consulting Services
541712
Research and Development in the Physical, Engineering, and Life
Sciences (except Biotechnology)
541990
All Other Professional, Scientific, and Technical Services
561110
Office Administrative Services
561210
Facilities Support Services
561330
Employee Leasing Services
561410
Document Preparation Services
561421
Telephone Answering Services
561431 Private Mail Centers
561499 All Other Business Support Services
611420 Computer Training
611430 Professional and Management Development
Training
611710 Educational
Support Services